And there you guys were in class trying to list all the Gilligan's Island episodes without even a hint of irony.

8 seconds sound clip from the Dazed and Confused (1993) movie soundboard.

You can hear this line at 00:07:47 in the Blu-ray version of the movie.

Quote context

[...]

- I didn't know that drugs and alcohol were such a big problem that they had to resort to neo-McCarthyism.

- I think they're just afraid some of us might be having too good a time.

- It's the old age suppressing youth thing, you know.

- Neo-McCarthyism. I like that.

- Oh, that's good, Tony.

- And there you guys were in class trying to list all the Gilligan's Island episodes without even a hint of irony.

- What in the hell are you talking about, girl?

- You weren't thinking about it, were you?

- Gilligan's Island?

- It's what's called a male pornographic fantasy.

[...]