look up any word, like b4nny:

1 definition by DatJiveTurkey

When a girl is so fat, like Rosanne from the TV show, that you can fold over her stomach fat and use it as a fourth orifice for sexual intercourse.
Yeah man, I was so drunk that I couldn't find her vag so I just Roseanned her.
by DatJiveTurkey January 08, 2010