The Adventures of Jimmy Neutron: Boy Genius

Grumpy Young Men (2x3)

Air date: Oct 03, 2003

Jimmy, Carl, and Sheen use Jimmy's Metabolic Accelerator so they can be old enough to buy a violent video game. The machine works a little too well, and the boys end up as senior citizens. Inventions: Metabolic Accelerator, Experimental Truth Serum