Getting my flu shot
Nurse: Would you like your flu shot in your right or left arm?
Me: I don't know, which one do most people get it in?
Nurse: Most people do their left arm.
Me: I'll do my right arm. I masturbate using my left hand.
Nurse: How about I just give you the shot in your brain? You don't use that at all.
Me: That would hurty.