Diane (Sally Kellerman): Actually, I'd like to join you, but I have class tonight.
Thornton Melon (Rodney Dangerfield): Oh. How 'bout tomorrow night?
Diane: I have class then, too.
Thornton Melon: I'll tell you what, then. Why don't you call me some time when you have no class?
Diane: [laughs] Alright. Maybe I will.
Thornton Mellon (Dangerfield) doing his best to ask Lit Professor Dr. Diane Turner (Kellerman) on a date.
Back to School, 1986
Screenplay by Steve Kampmann, Harold Ramis, Peter Torokvei, and William Porter
Paper Clip Productions
Source: imdb.com