The Adventures of Jimmy Neutron: Boy Genius

Sheen's Brain (2x10)

Air date: Mar 08, 2004

Jimmy tries to stop Sheen from getting left back in school by turing his Brain Drain Helmet into a Brain Gain Helmet. However, his plan backfires when Sheen's I.Q. – as well as his head – inflates to a destructive degree. Invention: Brain Gain Helmet