Come on. I know a professional virgin when I see one!
5 seconds sound clip from the Black Christmas (1974) movie soundboard.
You can hear this line at 00:09:52 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, come on, this is a sorority house, not a convent!
- I'll see ya later. I'm gonna go pack.
- Come on, Clare. She didn't mean anything.
- No, really Jess, it's okay. I have to finish packing anyway.
- Hasn't she had enough trouble fitting in here without you getting at her all the time?
- Come on. I know a professional virgin when I see one!
- Hey, can I get a hand out here?
- Speaking of professional virgins... Here we have the Queen of Vaudeville circa 1891.
- Come in the other room! We've got a surprise for you!
[...]