Beer? I was probably in like fourth grade, and I thought it was apple juice.

I quickly discovered otherwise and spit it all back out.
Cigarette? Never had one, don't plan on it.
Boob? I don't really recall noticing them for a 'first time', boobs have just kinda always existed for me.
Penis? Probably some special on the Discovery channel about African tribes

But honestly, no I don't remember the 'first'.
Kiss? Yep, I was in first grade and I got married on the playground.
Snikers bar? No
Crush? Too many to remember the first...
Girlfriend/Boyfriend? Still with him.
Drunk? I've never gotten full out drunk before, just tipsy, so no.
Joint/Bong Hit? Never done it, don't plan too.
Masturbation session? No, but apparently my parents were always having to tell me to take my hands out of my pants when I was younger.

Although I doubt thats what I was doing.
Fight? Yeah actually, my best friend from grade school - I was mad at her for some reason, don't rmember why, and I pushed her or something, and we ended up rolling around on the floor pulling at each others hair. She also poured orange juice on my head the next day.
Broken Bone? My pinky got slammed in a door and broken.
CD/Tape/Vinyl? Definently too many to remember a first.
Movie/DVD? See above, but probably something Disney.