Captain Underpants and the Sickening Fumes of Smartsy Fartsy S12E12 - Captain Underpants and the Sickening Fumes of Smartsy Fartsy 2018
To steal Mr. Krupp's rule book from a tightly locked safe, the boys cook up a super-intelligent gas cloud who winds up turning against them.
- Released: 2018-07-13
- Runtime: 50 minutes
- Genre:
- Stars: Nat Faxon, Jay Gragnani, Ramone Hamilton, Sean Astin, Peter Hastings, Jorge Diaz, Dayci Brookshire
- Director: Octavio E. Rodriguez