1. adj. Describes the many folds and layers of labia of an inside-out pussy.
2. Noun. Vagina that closely resembles the Arby's big roast beef sandwich.

A vagina in which the inner lips hang out farther than the outer lips. This shit is straight NASTY

a black chicks vaginal lips

The spreading of the vaginal lips when a woman gives birth and the baby's head is coming out.

Sloppy, often smelly, poontang(vagina).

When vagina gets fucked so many times that the inner lips begin hanging outside of the vagina itself. Called Roast Beef because the small thin flaps of skin look similar to the shit you see hanging from the bun of a roast beef sammich from Arby's

When a bitch squats over a fire to piss on it, burns her pussy, and then you eat her out.

When a lady has a roast beef pussy