I've seen you before, you know.
4 seconds sound clip from the The Breakfast Club movie soundboard.
You can hear this line at 00:08:37 in the Blu-ray version of the movie.
Quote context
[...]
- I'll give you the answer to that question next Saturday.
- Don't mess with the bull, young man, you'll get the horns.
- That man is a brownie hound.
- You keep eating your hand, you're not going to be hungry for lunch.
- I've seen you before, you know.
- Who I think I am. Who are you? Who are you? I am a walrus.
- I can't believe this is really happening to me.
- Oh, shit! What are we supposed to do if we have to piss? If you got to go, you got to go.
[...]