rosca
It's a Mexican slang word. Originally meaning Cinnamon Roll, but used as slang, it means your Butt-Hole.
Let me get your Rosca. Gimme the Rosca. I'm gonna put it in your Rosca. I wanna eat the Rosca.
Rosca de Reyes
The mexican tradition of hanging out with friends with dinner and a movie and slowly building to an orgy. Caution: there may be more men than women.
Want to come over to my house for rosca de reyes. Charlie, Bill, and Mike, will all be there.