Oh, wait, my friend came up with a good one. Since it's medicaly proven that men who masturbate five times a week are less likely to suffer from penile or testicular cancer, my friend decided on an awesome catchphrase.
"A wank a day keeps the docter away!"
Yeah. It's funny 'cause it's true.
Actualy, the funny part is the thing he does with his hands. He points his index fingers at you and repeatedly bends his thumbs, like a gun. The act causes his fingers to bend and twitch slightly. As soon as I saw this, I said; "Your body must work really strangely."
Yeah, pointless tale.