He's got a good idea.
4 seconds sound clip from the Fun and Fancy Free movie soundboard.
You can hear this line at 01:03:17 in the Blu-ray version of the movie.
Quote context
[...]
- Why, it says here that you can change yourself into anything!
- Sure, sure! You wanna see me? I can change myself into the darndest things!
- Go on, gimme somethin'. Anything!
- See? Mickey never misses a trick.
- Well, can you change into a fly?
- A cute, teeny-weeny, itsy-bitsy housefly?
- Aw, you don't want a fly. How about a bunny with long, pink ears?
- Ha. Well, of course, if you can't do a fly, why, uh...
[...]