Hey, you're not Baby Herman.
4 seconds sound clip from the Roger Rabbit - Roller Coaster Rabbit movie soundboard.
You can hear this line at 00:04:15.847 in the Blu-ray version of the movie.
Quote context
[...]
- Come on, let's get out of here before we get into trouble.
- Pee-ew! No more corn dogs for you today.
- Hey, you're not Baby Herman.
- Hey, what are you doing down there? Baby, no!
- I hate bullfights! I never eat beef! I'm a vegetarian! I don't even wear shoes.
- Balloon.
[...]