The Sex Lives of College Girls would be my personal fav. They consider their dorm room their home.
The main characters are four 18-year-old freshmen girls who live together in the same dorm room:
"Kimberly Finkle, a freshman who is a working student who comes from Gilbert, Arizona, a small town that is predominantly white, and comes from a poor family
Bela Malhotra, a freshman who is an Indian-American student from Nutley, New Jersey, who wants to become a comedy writer and is sex-positive
Leighton Murray, a freshman and a wealthy legacy student from New York City who is a lesbian and trying to live up to her mother's high expectations
Whitney Chase, a freshman and wealthy star soccer player from Seattle who is having an affair with her assistant soccer coach and is the daughter of a U.S. senator"
Sounds like an absolute perfect scene for tying the four girls up and having some prolonged fun together (and not sparing the lesbian girl, haha)!