Don's Fountain of Youth is a cartoon

Cartoon

A cartoon is a form of two-dimensional illustrated visual art. While the specific definition has changed over time, modern usage refers to a typically non-realistic or semi-realistic drawing or painting intended for satire, caricature, or humor, or to the artistic style of such works...

 made by the Walt Disney Company

The Walt Disney Company

The Walt Disney Company is the largest media conglomerate in the world in terms of revenue. Founded on October 16, 1923, by Walt and Roy Disney as the Disney Brothers Cartoon Studio, Walt Disney Productions established itself as a leader in the American animation industry before diversifying into...

 in 1953.
While vacationing in Florida

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

, the sights of which are not as interesting to his nephews as their comic book, Donald Duck and the nephews stumble across what looks like the legendary Fountain of Youth

Fountain of Youth

The Fountain of Youth is a legendary spring that reputedly restores the youth of anyone who drinks of its waters. Tales of such a fountain have been recounted across the world for thousands of years, appearing in writings by Herodotus, the Alexander romance, and the stories of Prester John...

. Donald can't resist convincing his nephews that it really works as he supposedly regresses in age, and eventually Donald tricks his nephews he turned into an egg. Soon they all run into trouble with an alligator and her two babies, as the egg Donald used was a gator egg.