This is probably one of my favorite fan theories out there, because I loved the show as a kid and I think it is probably what the writers had in mind as a joke.

This is probably one of my favorite fan theories out there, because I loved the show as a kid and I think it is probably what the writers had in mind as a joke. Another fan theory I'm a bit of a fan of that I've seen only once or twice online (and the creators allude to it strongly in an interview) is that Rick from Rick and Morty is Dexter from Dexter's Laboratory as an old man.