Ha. Should have left well enough alone.
5 seconds sound clip from the Fun and Fancy Free movie soundboard.
You can hear this line at 01:08:33 in the Blu-ray version of the movie.
Quote context
[...]
- Well, it looks like success at last.
- Free from the clutches of that terrible monster.
- But wait. Mickey's going to make doubly sure. He's taking no chances.
- Just in case the giant might wake up.
- Ha. Should have left well enough alone.
- Come back here! Come back here!
- And so, with the passing of the wicked giant, Happy Valley echoed once again with song and laughter.
- For with the return of the magic harp, peace and prosperity reigned throughout the land.
[...]