The Bloo Superdude And The Great Creator Of Everything's Awesome Ceremony Of Fun...

[Another Castle]

Originally Posted by taranchula

As for the aging question, the Foster's universe was in a state of "Prepetual Now" where no one really aged significantlly throughout the course of the show, so it's safe to assume had the show continued on then Mac would most likely still be 8 in any future episodes.

Whislt I don't like this episode and choose to ignore it, I have recently watched Bad Dare Day (the following episode), and at the end Bloo (impersonating Mac) mentions him being eight years old- unless he was just mistaken, this would perhaps be proof of your theory. Well, we can believe what ever we want.