The Naming of Chins

So I went home last night and, with the knowledge I acquired from the internet, picked up each chin to determine their gender. One was definitely a boy, so he will further be known as Fry Whitebutt and the other one was, as described to me, a girl, who's full name is Leela Yellowbutt.

I'll be damned if that's the only way I can figure out which is which!