Holds up very well
I'm rewatching old episodes and wow, it stands up to time very well. A lot of old kids shows aren't as funny to me as an adult but Johnny Bravo is one of the few that still makes me laugh.
There are a lot of hidden adult jokes I'm getting like one where the lady is going to mutate him into an animal and he says "We have a lot in common: you want to manipulate my genes and I want to..." he doesn't finish but your imagination can complete the sentence.