The Senseless Torment of the Space Toilet

The Senseless Torment of the Space Toilet is the first episode of The Epic Tales of Captain Underpants in Space!

Synopsis
George and Harold convince Mr. Krupp to send Jerome Horwitz Elementary School on a space school trip to outbest his "rival", Moxie Swaggerman. When Dr. Shifty Fitzgibbons lies to everyone about his experimental project, F.L.U.S.H.E.R., George, Harold and Captain Underpants go investigate. However, Captain Underpants accidentally turns his lie into a truth when he accidentally flushes Fitzgibbons' space chemicals into F.L.U.S.H.E.R.

Trivia

 * This is the first Captain Underpants episode to take place in outer space.
 * George says "Space Is The Place!"in one scene. This is a reference to the Sun Ra song, album and movie.
 * Captain Underpants gets slammed on the toilet and a bit of water splashes, then he has tears dropping down from his eyes while getting sucked away by the toilet exploding, making Harold and George believe that he died from the explosion. Somehow, he doesn't at all turn back into Mr. Krupp from the splashed water or his own tears, possibly because they weren't powerful enough to transform him into Mr. Krupp again.
 * This is the first episode where Other Sophie and Gooch Yamaguchi have their eyes seen behind their glasses for a split second.
 * This is Dr. Shifty Fitzgibbons, Jet Wingman, Haley Comet, Warply, Dupe Licitous, Moxie Swaggerman and F.L.U.S.H.E.R.'s debut.
 * Harold stating that Dr. Shifty Fitzgibbons sounds like a made-up name hints at Fitzgibbons' true identity in The Aggravated Assault of the Alien Armada.
 * This is the first time Captain Underpants has a toilet stuck to his bum, it's unknown if the toilet on his bum is filled with water, but even if there is, he still doesn't even turn back into Mr. Krupp.