pee biscuit/piss biscuit

noun: a small piece of toilet paper that gets stuck in/on a woman's pussy after wiping, which can end up in someone's mouth who is performing oral sex on them.

I went down on Betty last night, and got a pee biscuit/piss biscuit in my mouth. I hate it when that happens!
Going down on Susie is the worst; she always has a pee biscuit/piss biscuit down there!
I swallowed a pee biscuit/piss biscuit last night while going down on Susie.
Have you ever swallowed a pee biscuit/piss biscuit while eating a girl out?