Speaking of which - in Quebecois French, there's an expression "Swing la bacaisse a fond d'la boite a bois" which noone knows the etymology thereof - but realistically speaking - it's only used in once instance - when a fat lady is shaking her booty in a party held in someone's basement. It's basically "hey! You go, fat lady! Awesome dancing!" but only in the basement (it's literally - "at the bottom of the wooden box")