09-17-2006, 09:56 PM | #561 (permalink) | |
Artist of Life
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I hold complete contempt for Bush and his actions. But Bush is not the problem (Yes UsTwo, a liberal who doesn't think Bush is the problem). He's just taking advantage of something that was already here. |
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09-17-2006, 10:23 PM | #562 (permalink) | |
immoral minority
Location: Back in Ohio
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09-18-2006, 01:02 AM | #563 (permalink) | |||
... a sort of licensed troubleshooter.
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Notice the dust puffs several stories below the collapse. |
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09-18-2006, 07:01 AM | #564 (permalink) | |
Devils Cabana Boy
Location: Central Coast CA
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09-18-2006, 07:05 AM | #565 (permalink) | |
Tilted Cat Head
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Location: Manhattan, NY
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To see simply how this works take a garden hose and blow with your mouth from one end, then use a high pressure compressor on the same end and see the difference in how much distance the water goes from the other end.
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09-18-2006, 07:40 AM | #566 (permalink) | |||
... a sort of licensed troubleshooter.
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Fatsom said the fires were not 1500C, a fact that even Popular Mechanics agrees with: Quote:
Fatsom also mentioned the fire suppresing system, something that isn't often discussed. We don't know a lot about the sprinkler system, and it could play a large part in the science of our discussion. Quote:
Last edited by Willravel; 09-18-2006 at 07:42 AM.. Reason: Automerged Doublepost |
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09-18-2006, 07:45 AM | #567 (permalink) | |
Tilted Cat Head
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I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
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09-18-2006, 07:50 AM | #568 (permalink) | |
Pissing in the cornflakes
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Your arms move slowly, the air moves very fast. This is because the air is channeled and under pressure. I don't know about you but I think several thosand pounds of falling concrete will create a good deal of pressure. Not to mention that as things break they will shatter at supersonic speeds due to the nature of crack propagation, which would shoot debris out VERY fast with 'explosive' force. Its why an instron machine needs a shield when testing materials in compression. Edit:Pounds should be TONS
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Agents of the enemies who hold office in our own government, who attempt to eliminate our "freedoms" and our "right to know" are posting among us, I fear.....on this very forum. - host Obama - Know a Man by the friends he keeps. Last edited by Ustwo; 09-18-2006 at 07:54 AM.. |
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09-18-2006, 07:52 AM | #569 (permalink) | |
Tilted Cat Head
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I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
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09-18-2006, 08:01 AM | #570 (permalink) | ||
Junkie
Location: Fort Worth, TX
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So you're suggesting I post evidence that fire is not hot? That we can not melt steel with fire? How about I post evidence that fire occurs and is not simply a government conspiracy. Jet fuel burns hot. Mixed with paper, carpet, and all sorts of flamable things inside the building it's going to burn hotter. With a giant hole in the side of the building plenty of air will flow in to feed the fire. With concrete floors that heat energy will be concentrated, and the only thing for it to do is give it's heat to the building itself. Quote:
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"Smite the rocks with the rod of knowledge, and fountains of unstinted wealth will gush forth." - Ashbel Smith as he laid the first cornerstone of the University of Texas |
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09-18-2006, 08:18 AM | #571 (permalink) | ||||
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Last edited by Willravel; 09-18-2006 at 08:33 AM.. Reason: Automerged Doublepost |
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09-18-2006, 05:25 PM | #572 (permalink) | |||||
Devils Cabana Boy
Location: Central Coast CA
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[QUOTE=willravel]Jet fuel burns at 800° to 1500°F. I belive carpet, paper, desks, etc. burn much cooler than jet fuel (please, feel free to correct me if I'm wrong). Are you suggesting that the temperature at which jet fuel, carpet, paper, desks, chairs, houseplants, computers, etc. all burn is cumumlative? If so, that could explain the 1500C temperature, but it would lead me to a state of confusion that I may never come back from, as it goes against my basic understanding of the nature of fire.
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09-18-2006, 05:34 PM | #573 (permalink) | ||
... a sort of licensed troubleshooter.
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So the NIST says it could have gone as high as 1800F? Well that's still a far cry from 1500C (2732F).
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09-18-2006, 06:22 PM | #574 (permalink) | |
Tilted Cat Head
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Location: Manhattan, NY
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Were you expecting some sort of movie type "pause" where the failing columns hold out long enough for another group of people can get out of the building? Once structures fail they tend not to "hold up" or create any resistence. Otherwise, wouldn't they then need to put charges on ALL floors in order to demo buildings?
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I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
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09-18-2006, 06:34 PM | #575 (permalink) | |||
... a sort of licensed troubleshooter.
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09-18-2006, 06:39 PM | #576 (permalink) |
Tilted Cat Head
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Location: Manhattan, NY
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again, once the structure object under pressure fails, the rest of it is pretty simple.
Regardless of the way it is imploded, the resistance is still the same is it not? A building in demolition is falling at nearly free fall speeds once the structural support is compromised.
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09-18-2006, 06:45 PM | #577 (permalink) | |||
Devils Cabana Boy
Location: Central Coast CA
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fastom, who I was originally arguing with, did not state F or C, I assumed he meant F. Quote:
A static load is very different than a dynamic load, the weight of the above tower at rest is very different than when it fell one story, after falling 10-20 feet it exerts much more force than when it is stationary. Place a bowling ball on your foot, it will be very heavy, but not break anything, now drop it 1 inch onto your foot, it hurts like a bitch huh, now 6 inches, then 1 foot, then 2 foot, keep doing this until you realize that the higher it falls the force exerted increases exponentially. Nothing, and I mean Nothing could stop that many floors from dropping. Quote:
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09-18-2006, 06:53 PM | #578 (permalink) | ||||||
... a sort of licensed troubleshooter.
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Demo: First thing to go is the bottom supports in the building. -the bottom of the building always has the strongest supports, as it is designed to take the full weight of the building. -removing the bottom supports first ensures that as the building collapses it has little to no resistence from the frame. -immediatally after the bottom of the building loses strength, then the middle and top are destroyed to ensure that the building will not fall anywhere but inside it's footprint. -very few demolitions fall at free fall speeds. Many of them are close, but those are usually smaller. WTC: The collapses started at the upper middle and top, with no structural strength loss at the lower middle or bottom of the building -the strongest supports would still have been intact when the building collapsed, which would offer resistence, but more importantly that would cause the building to be more likely to fall well outside of it's footprint -the building had experienced only moderate fires for a very limited amount of time -it fell at free fall speed, and the WTC are the largest buildings to collapse in history Last edited by Willravel; 09-18-2006 at 07:02 PM.. Reason: Automerged Doublepost |
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09-18-2006, 07:30 PM | #579 (permalink) |
Tilted Cat Head
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Location: Manhattan, NY
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are there facts for it being timed at free fall speeds?
what i witnessed did not look much different than the speeds of buildings I've seen implode in Las Vegas.
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I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
09-18-2006, 07:35 PM | #580 (permalink) | ||||||
Devils Cabana Boy
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I have a physics midterm to study for; I think this is my last post for the day. Quick note to cynthetiq, the speed of collapse was just slightly longer than a freefall. I’ll crunch some numbers to find the experimentally derived resistance the tower experienced to fall in the time it did.
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09-18-2006, 07:41 PM | #581 (permalink) | |||
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09-18-2006, 09:12 PM | #582 (permalink) | ||
Devils Cabana Boy
Location: Central Coast CA
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Donate Blood! "Love is not finding the perfect person, but learning to see an imperfect person perfectly." -Sam Keen |
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09-18-2006, 11:38 PM | #583 (permalink) | |
Psycho
Location: way out west
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I don't think it was 1500 F at all. I'm not sure how NIST figures 1832 degrees how did they sample that? |
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09-19-2006, 05:15 AM | #584 (permalink) | ||||
Devils Cabana Boy
Location: Central Coast CA
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Donate Blood! "Love is not finding the perfect person, but learning to see an imperfect person perfectly." -Sam Keen |
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09-19-2006, 05:34 AM | #585 (permalink) | |
Tilted Cat Head
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Location: Manhattan, NY
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It may APPEAR similar but that's because from what I understand of physics things fall at the same rate and speed. Once the building structure was compromised, the collapse was similar to me.
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I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
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09-19-2006, 07:00 AM | #586 (permalink) |
Pissing in the cornflakes
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Why are you arguing with someone who couldn't pass physics 101?
Debate requires a baseline understanding of the issues and you have shown that fastom lacks that understanding many times over.
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09-19-2006, 07:04 AM | #587 (permalink) | |
Tilted Cat Head
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__________________
I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
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09-19-2006, 07:17 AM | #588 (permalink) | |
Pissing in the cornflakes
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Agents of the enemies who hold office in our own government, who attempt to eliminate our "freedoms" and our "right to know" are posting among us, I fear.....on this very forum. - host Obama - Know a Man by the friends he keeps. |
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09-19-2006, 02:29 PM | #589 (permalink) | |
Devils Cabana Boy
Location: Central Coast CA
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Donate Blood! "Love is not finding the perfect person, but learning to see an imperfect person perfectly." -Sam Keen |
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09-19-2006, 03:32 PM | #590 (permalink) | |
... a sort of licensed troubleshooter.
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09-19-2006, 03:46 PM | #591 (permalink) | |
Tilted Cat Head
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Location: Manhattan, NY
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BTW, I was reading my other post, and I wasn't trying to be sarcastic, slightly snarky I admit it came out, but was trying to elicit a response as to what your expectation was.
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I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
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09-19-2006, 05:16 PM | #592 (permalink) | |
Devils Cabana Boy
Location: Central Coast CA
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Donate Blood! "Love is not finding the perfect person, but learning to see an imperfect person perfectly." -Sam Keen |
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09-20-2006, 10:56 PM | #593 (permalink) |
Psycho
Location: way out west
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I guess we just see things differently.
If we both saw a man jump off a bridge we'd probably gasp as we watched him fall. When he started slowing then stopped short of the ground then began to rise up again we'd analyse what we saw. You'd come up with some fancy physics that say his body was in shock which caused him to lose enough weight to slow his fall and his screams made warm air pockets and the inversion lifted him back up. Me, i'd notice the rubber cord around his ankles. |
09-21-2006, 04:43 AM | #594 (permalink) | |
Rail Baron
Location: Tallyfla
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09-21-2006, 05:37 AM | #595 (permalink) | |
Tilted Cat Head
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Location: Manhattan, NY
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I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
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09-21-2006, 05:49 AM | #596 (permalink) |
... a sort of licensed troubleshooter.
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Fatsom is kinda right. We've been dancing around this the whole time, but he's right. Example? The 1800F temperature is based on the maximum temperatures possible for a fire fueled by jet fuel, desks, chairs, paper, drapes, etc. It almost certianally wasn't that hot. Eyewhitness reports talk about how the fire was dying down as much as 20 minutes before the collapse. Cheif Palmer, on the 78th floor of the South tower (the one that fell fastest, and yet most of the fuel spilled out and exploded outside the building), [I]from the crash zone[/URL], said there were "two isolated pockets of fire" when he called for backup and requested 2 hoses to put them out. Reports like this one come from firefighters that were inside the building putting the fires out, and I'd imagine firefighters know a thing or two about the behavior of fire. Remember, jet fuel burns between 800F and 1500F, which suggests that it's more than posible that they were burning at 800F. They could have been burning at 400F, considering that most of the jet fuel burned off in the initial explosion. Not even Dilbert could make the buiding fall with 800F fires. Even with a 1500F fire, it's a real stretch explaining the collapse of the building. It has to assume most of the fire protection was stripped fom the steel. Some of the fire protection was stripped by the crash itself, of course, but it's not like all the fire protection from the whole floor was lost across several floors. You'd need to have ideal circumstances for a 1500F fire that was consistanly hot to heat the uncovered steel to a temperature where it started to lose any of it's tensile strength. I'll tell you what, let's split the difference and say that the fire burned at 1150F. Add to that the heat from the fires on the desks, chairs, paper, drapes, etc. (even though the temperature of a fire is not a cumulative number based on the emperatures of the individual fires), and we'll say about 1350F. And that 1350F temperature did not last a full hour. It started cold, built up to hot, then dropped off and went down again. Those are hardly the ideal situations that NISA, FEMA, Dilbert, and PopMech suggest. Oh, and if you want proof that PopMech isn't reliable, check out what they are saying about 9/11 cough, a condition that effects thousands of rescue workers and brave civilians who dug through the rubble to find survivors. Yikes. Talk about disrespecting the heros of 9/11. I can't belive that Popular Mechanics can't figure out that pulverized cement in the air is toxic. 70% of 9/11 recovery workers suffer from severe lung problems.
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09-21-2006, 06:20 AM | #597 (permalink) | |
Junkie
Location: Fort Worth, TX
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"Smite the rocks with the rod of knowledge, and fountains of unstinted wealth will gush forth." - Ashbel Smith as he laid the first cornerstone of the University of Texas |
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09-21-2006, 06:36 AM | #598 (permalink) |
Tilted Cat Head
Administrator
Location: Manhattan, NY
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by that same "dancing" I can easily say that the WTC core center structure was hit by a plane that was travelling at 500+MPH and that in and of itself was compromised, the fuel fires themselves just added a small component. The same plane which heavily damaged the Pentagon which is a reinforced building supposedly designed to survive military strikes was able to do as much damage to the WTC which was not designed to withstand such an onslaught.
Isn't that the same kind of thing just different perspective or dancing position?
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I don't care if you are black, white, purple, green, Chinese, Japanese, Korean, hippie, cop, bum, admin, user, English, Irish, French, Catholic, Protestant, Jewish, Buddhist, Muslim, indian, cowboy, tall, short, fat, skinny, emo, punk, mod, rocker, straight, gay, lesbian, jock, nerd, geek, Democrat, Republican, Libertarian, Independent, driver, pedestrian, or bicyclist, either you're an asshole or you're not. |
09-21-2006, 06:41 AM | #599 (permalink) | |
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09-21-2006, 06:59 AM | #600 (permalink) | ||||||
Devils Cabana Boy
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I’ve got a physics midterm, in 1 hour, I’d write more, but I don’t want fastoms ‘fisics’ clouding my mind.
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911, happened |
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