To keep their foreskin from flopping over their head.
Khakaws!
Q: what does Oedipus the king's mother wear under her dress? A: a Freudian slip
He heard they were having upside-down cake!
A: Ptera Don
Foreskin. Budam tss
Burning Sanders!
Ventriloquists have to be able to speak with their mouths closed. Politicians speak out of both sides of their mouths simultaneously.
A: You go AHEAD I'll HANG AROUND!
You go on ahead, I'll just hang around.
They both hit the deck and flop like a fish.