the large flapping, beefy scrotum like skin sometimes covered in a film of what would appear to be chedder sauce caused by hygene negligence.
Mary Jane rotten crotch: Omg im so sorry about my roast beef and chedder cunt last night.
dingle berry johnson: Oh thats ok, i dont mind a little flavour.
dingle berry johnson: Oh thats ok, i dont mind a little flavour.
by sirmarksalot December 25, 2010

When you fuck your cousin so hard her pussy falls out so you put some bread and mustard on it and eat her out.
Me: bro i ate a mississippi roast beef sandwich last night!
Friend: that sounds awesome, what is it?
Me: my cousin!
Friend: that sounds awesome, what is it?
Me: my cousin!
by bigboy992 March 29, 2021

by AntonioSancho August 23, 2006

When a botha pulls huge pussy lips over a bitch's head and beats his cock violently off her forehead.
by Tim S. Trickler February 6, 2009

by stahlout September 15, 2006

Oversized, over-used, stretched out vagina lips, hanging from the crotch area, resting on the inner thigh, as if to be an open faced roast beef sandwich.
When your at a party, you meet a chick, you stick your hands down her pants, and there's more meat in your hands than in hers. That's open faced roast beef.
by BT Cruiser November 17, 2007

by Emma Putnam January 16, 2008
