What? Who are you?
3 seconds sound clip from the Uncle Buck (1989) movie soundboard.
You can hear this line at 00:38:15 in the Blu-ray version of the movie.
Quote context
[...]
- I'm going to shove my load into you whether you like it or not. Come on!
- Come on, you son of a bitch. Open up.
- Freeze!
- Cindy!
- What's she doing in Indianapolis?
- Her father had a heart attack.
- Who are you? And how do you know her father had a heart attack?
[...]