Chair Restraining Order

Listen up, genius. So, a "chair" can be something you sit on, or the head of a committee. "Booty" can be a pirate's treasure or a person's posterior. "Cracking up" can mean laughing hysterically. The joke is, the chair (piece of furniture) filed a restraining order because the booty (butt) kept cracking (making noises). Get it? You probably don't.