This TV show is old, as I remember it, probably 90's or before. The only thing I can remember is that it involves a man that could become a child... like shape shift. I think they had two actors, one for his 'boy' and one for his 'man' form. That's like all I can remember...

1 Answer 1


Big John, Little John.

The show's main character was a forty-year-old middle school science teacher named John Martin (played by Edelman). While vacationing in Florida, he drinks from a spring which turns out to be the legendary Fountain of Youth sought by Juan Ponce de León. The water changes him into a twelve-year-old boy (played by Rist), and back again.

The changes occur spontaneously and without warning.

  • Wow, cool. I had thought it was more of a 'superpower' type thing, but this really fits. Thanks. Commented Aug 4, 2020 at 0:03
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