B all the way. I always change it if it's not B.
Oh, and I have yet to need to yank it with one hand. Sit down time usually leaves me all the time to use both.

Bbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Well, I must be Hurculean in my wrist strength or else the rest of TFP must have wrists made of glass. I've pulled off way more than I wanted on several occasions. In A, you can also use wall friction (depending on the holder, I suppose) to help grab the paper for increased tearing efficiency. I can't for the life of me see an advantage to B. I see some potential advantages to A, and none for B. Regardless, you swine can't use my restroom without some level of supervision.

People debate this?

I just use a box of tissues. They are softer and there is no need for debate.

Those friction arguments can be made regardless of roll orientation, and so can all of the other "easier to tear nonsense."

I'm sorry, but A is NOT easier to tear than B based on physics. The tensile strength of the toilet paper does not vary with orientation, nor does the force you apply, the angle along the horizontal plane at which you tear, and the coefficient of friction on the roller remains the same. If anyone would care to draw up a free body diagram to prove otherwise, by all means do so. Until then, leave your false science out of this debate.
-----Added 16/2/2009 at 08 : 15 : 19-----
And for you religious types, God also favors the B orientation. Just think about all the B's. Bethlehem, Bible, Buttsex, Breasts, its all there, clear as day.

Say Champ, I would have to beg to differ, but allow me to state a few assumptions up front. No offense to any who do not conform to these assumptions...

Super Critical Assumption Numero Uno: Said toilet paper tearer is not a midget.
Super Critical Assumption Numero Dos: All of the various properties of your favorite brand of (hopefully double ply, no lotion) toilet paper are indeed invariant on configuration.
Super Critical Assumption Numero Tres: I am not putting together a free-body diagram for this thing.
Super Critical Assumption Numero Cuatro: I keep my head as far from my own shit as possible.

Now, I would tend to think that if you're reasonably higher up than the toilet paper holder, you will tend to pull up on the paper. Especially if you want your nostrils as far from the detritus you just blew out of your colon. And I do. I'm not saying I can't tear it in B, of course I can. But the presence of the bar between the paper and the direction my hand is pulling the paper does in fact provide something of a pinch point, which can make it easier to tear the paper. In configuration B, it would require something like holding a pencil against the top of the roll at the point where you're tearing it. Similar to putting a ruler against a fold in a piece of paper when you're trying to tear a straight edge. Does that not make sense?

I'll give you that the friction thing might not make much difference. You might have a difference in leverage arms from the point of contact / rippage, but it's dependent on the technique.

Let's not forget Abraham, Absolution, Angels, Assfucking, Acrolytes, and Ask-Me-Before-You-Tell-Your-Parents...

I'll agree with pig to the extent that the A position more readily allows one to stop the roll with the side of one's hand and tear with one's fingers, thus it facilitates the one handed tear. That being said, the A position is still an abomination before Jesus, Allah and Crom.

As for me and my house, B.

It always annoys me to see A. I voted A by mistake too. Doh!

B, people, B. A makes NO sense.

I voted for A but really meant B, I looked at the graphic wrong.

B people, B! A is wrong in the eyes of Xenu, too.

Did anyone else upon viewing this, want to go to everyone's house who voted on this list and switch the TP unrolling method? I am sure there are certain people on this list would fucking freak if they saw A changed to B (or vise versa) all over their house.

It's true that only "A" is allowed at my house. And I must sleep on the left side of the bed. To my friends in Berkeley, no this isn't why I moved out of California! *grin*

Hmmmm, Yes...This IS one of those Big "1" Cosmic Questions that should be required when you are seriously contemplating marriage. :)

Bidet

In my bathroom, A is the only practical way to do it. It's an old porcelain TP holder cemented in place and recessed slightly to go with the tile pattern, and it has decorative points at the top and bottom. The only way to reach it from the toilet is to reach under your right arm with your left, and if it's hanging overhand pulling on it causes the roll to cam up and catch on one of the points, preventing it from rolling and ripping at the first square. Underhand, you pull with the left hand and push down with your right arm to stop it.

This habit has stuck with me, but it really depends on the placement of the holder.
This is the obvious answer. If you got shit on any other part of yourself, would you wipe it off with paper and consider yourself clean?
They're bad for septic tanks and can clog sewer pipes since they aren't designed to break down like TP.

Very well... B damn you B!!!