Why, it says here that you can change yourself into anything!
6 seconds sound clip from the Fun and Fancy Free movie soundboard.
You can hear this line at 01:02:54 in the Blu-ray version of the movie.
Quote context
[...]
- Well, you leave it to Mickey. Just watch.
- Ten, twenty, thirty, forty. Boy, what a life line!
- But what's this here? What is it? What is it!
- 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?
[...]