The MILF Chronicles.

You know that hot-looking college professor that lives down the block? The one with the long legs and the full, luscious breasts? Well, she's got a dirty little secret. Sin City presents the story of a sexually frustrated woman whose girlfriend has turned her on to the naughty pleasures of fucking the student body. Soon, she's luring hot, young college studs from the classroom to the bedroom to participate in her perverted extracurricular activities.