You weren't thinking about it, were you?
3 seconds sound clip from the Dazed and Confused (1993) movie soundboard.
You can hear this line at 00:07:56 in the Blu-ray version of the movie.
Quote context
[...]
- It's the old age suppressing youth thing, you know.
- Neo-McCarthyism. I like that.
- What in the hell are you talking about, girl?
- You weren't thinking about it, were you?
- It's what's called a male pornographic fantasy.
- Oh, my!
- You're basically alone on a deserted island with two readily available women.
[...]