The Forbidden Fountains of the Foreverglades! Scrooge and Goldie O’Gilt are turned into teenagers as they race Rockerduck to the Fountain of Youth, while the boys’ sibling rivalry uncovers danger at a spring break hotel
the episode mostly dealt with ap. Story involved Ponce De Leon running a popular resort that spring breakers go to. In order to stay young he uses the waters true powers. Basically its a fountain of age (in the form of a pool) and the teens who swim in it age creating the youth properties which he uses to stay young.
Uncle Scrooge and Goldie fall in as it meant to make people young and become teens. Duey dips his toe in it and ages a little (enough to be taller and the older sibling).
We do see a couple more ar (besides return to normal). Another old villian becoming young and his frankenstein goon/butler given a huge jug and turning into a baby.
we do an age to death. Scrooge and Goldie turning back to older with the former teens on spring break (and Duey) returning to normal