- What's that?
- I don't know.

9 seconds sound clip from the Bill & Ted's Excellent Adventure movie soundboard.

You can hear this line at 00:45:57 in the Blu-ray version of the movie.

Quote context

[...]

- It's ice cream. You eat it. It's good.

- Whatever, just eat it.

(Napoleon belches)

- All behold, he ate the pig. Thus proving that he's a Ziggy Piggy, Ziggy Piggy, Ziggy Piggy.

(Snorting)

- What's that?

- I don't know.

- Shit!

- Whoa!

- Where'd we land now?

- Dude, it's Sigmund Freud.

- How much time have we got left?

- Tons! Why?

[...]