Another name for a small bladder; derived from the fact that french people yell "wee wee!" all the time.
woman: Can we pull over? I really gotta pee!
man: But you just went.
woman: Come on, you know I got a french bladder!
man: But you just went.
woman: Come on, you know I got a french bladder!
by SarcasmSpasm March 15, 2013
Get the French Bladdermug.