This one bats about .500 in finding useful ways to pass the spring break. First, Kali's home alone when she gets paid a visit by Dave, who drools in her orifices a lot more than would seem necessary before finally hanging her head off the bed for an upside-down anal. Caroline, a Hungarian exchange student, comes looking to rent a spare room in Dave's house, but he's not home, so she gets it on with a friend of his in a surprisingly tender scene.
The downhill slide starts as Dave is home for another Hungarian, Eve, who sleeps through their scene. Kat helps Steve decide on a major and is unenthusiastically anal-ed by him.
All the cliches of the "inexperienced young girl" genre are on display: mild protestations, musings of "Is this wrong? Should we be doing this? What if my parents come home?", etc.