Why? Because you made him laugh?
4 seconds sound clip from the Who Framed Roger Rabbit movie soundboard.
You can hear this line at 00:50:46 in the Blu-ray version of the movie.
Quote context
[...]
- You don't understand. Those people needed to laugh.
- Yeah, and when they're done laughin', they'll call the cops!
- That guy Angelo would rat on you for a nickel.
- Not Angelo! He'd never turn me in.
- Why? Because you made him laugh?
- A rabbit. A Toon rabbit. About yea big.
- Look. There's no rabbit here, so don't harass my customers.
[...]