Two pencils walking down the street.
Which one hasn’t got AIDS?
The one with the rubber on.
Listen up, buttercup! This joke is for smarty-pants. See, one pencil has "rubber" (slang for condom) on it. Get it? AIDS is a disease usually transmitted with unprotected sexy-time. You probably wouldn't know anything about sexy-time anyway. I hear the ladies talk when you leave the bar... and you ain't getting any!