i wonder how they decided who'd be the ass

george: you be the ass
tony: no i was the ass last time.
george: so? you do it so well.
tony: oh i love when you say whisper such sweet nothings into my ear. ok!

(and yes, i realize it's another creation from madame tussauds and not "real"... but from the image i saw, it appears that they're both wearing part of one cow costume. )