Look, we know how you feel. We didn't believe it either when we were you and we-us said what we-us are saying right now.
9 seconds sound clip from the Bill & Ted's Excellent Adventure movie soundboard.
You can hear this line at 00:14:53 in the Blu-ray version of the movie.
Quote context
[...]
- Dudes, you guys are gonna go back in time.
- Yeah! You are going to have a most excellent adventure through history.
- OK, wait, if you guys are really us... what number are we thinking of?
- Yeah, we gotta get back to the report.
- Rufus! Listen to this dude, Rufus.
- He knows what he's talking about.
[...]