A fork of Rural Dictionary
When a vagina has been excessively sexed to the point that the lips looks like curtains made out of roastbeef.
Yo Fez did you see the Roastbeef curtains on that stripper?
Ex 1. When a girls pussy is so loose that it looks its throwing up, and there extra meat hanging out. Ex.2 A certain Summer Set re-rack in beer pong you can only get when you have 5 cups, the vagina with a little extra or a diamond with one at the top aka roast beef curtains.
Ex 1. "You know that girl Dubbe, I heard she got a case of Roastbeef curtains" Ex.2 "Let me get Roastbeef curtains" (While doing a Floppy hand waving with motorboatin your lip)
A girl who has large floppy vagina lips.
No one can find Katie's clit because her roastbeef curtains are in the way