I think they're just about equal, though the right may be slightly stronger.
Took you guys long enough to create a fapping joke.
My right arm, since it's my dominant arm. :]
I'm right-handed... so, um, yeah.. that pretty much says it all.
I'm not too strong in either arm, but I know that I have an easier time lifting things with my right hand. My left wrist always feels really... weak when I try to help lift things with both hands.
The wanking arm comment was already made?