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 October 30, 2007
by Emma Putnam January 14, 2008
Damn bitch u some fine R.B.S. (Roast Beef Syndrome)
Ewww I can smell that R.B.S. outside of your pants
Put that R.B.S right here.
Ewww I can smell that R.B.S. outside of your pants
Put that R.B.S right here.
by GuCcI May 20, 2013
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 06, 2009
by Bubba November 21, 2003
The girls Roast beef au jus was so foul it looked like it could be put in a roll with some gravy, horseradish and a slice of provalone cheese.
by Murph McGirt December 10, 2003