Don's Fountain of Youth is a Donald Duck short released 30 May 1953.
Huey, Dewey, and Louie are more interested in their comic book than on their Florida vacation. When they stumble across what looks like the legendary Fountain of Youth, Donald can't resist convincing his nephews that it really works. He pretends to regress in age. As baby Donald, he shreds their comic book and acts like a spoiled brat. He eventually tricks the boys into thinking he turned into an egg, but unfortunately he selects an alligator egg. Soon they all run into trouble with the family of alligators.