This episode, along with the accompanying episode Deja Vu, is shown rather sporatically. At one point, it was hardly shown at all except on April 1.
The April Fool apparently likes spearmint gum and people can bribe him with it since Timmy did that to convince the April Fool to help him with getting back at people.
The April Fool is shown to be a stand-up comedian, though no one, except for Cosmo, likes his jokes.
This is the first time Timmy saves the world.
This episode aired on October 11, even though it mostly takes places on April 1.
On a YouTube complantion (Aprils Fool's Day Complantion!), there's an easter egg called 'Textless Materials'. Witch shows textless title cards, the textless intro, the silent, textless end part of the intro, and of course, the textless ending credits. This was shown after the credits of 'Truth or Cosmoquenses/Beach Bummed!'.