Two white chicks 69'ing while one black guy fucks one in the ass. Hence open-faced.
(2 white girls in a car with one black guy)
Hey, dinner was great! I just realized, despite the fact that Arnold's not here and we can't have a traditional double-stuffed oreo, we still have all the ingredients for an open-faced oreo!. Oreo (double-stuffed, open-faced).
Charles: Yo did u hear about the Florida Double-Stuffed Oreo?
Frankfurt: Naw man wtf is that?
Charles: It's Boone and Moon with Sid in the middle
Frankfurt: Fuckin crazy bro.
During a run-of-the-mill gangbang, a women proceeds to lie down naked while the first gentleman takes a dump on her chest. The 2nd and 3rd men then ejaculate on the shit, followed by a 4th man taking a dump on the fresh jizz. The double-stuffed oreo is now complete and ready for consumption by the classy female.
Man #1: Did you hear about Lacey's bachlorette party? I heard her friends hired special entertainment.
Man #2: Yea I heard it got pretty crazy. The people they hired gave her a double-stuffed oreo. Gross.