Battle of the Gadgets - S4.E9

Bigweed has invented a giant clomp machine to conquer Snorkland. He and Little Weed's intentions are to ruin the Snork Awards for Defense. At the awards, All-Star wins for his machine and Junior, as usual, is upset because his invention didn't. Little Weed takes advantage of this and weasels to get it away from Junior. She trades her goopgun for it, and the Seaweeds use this machine to infiltrate Snorkland. Junior tries to show everyone his goop gun but no one listens. Junior ends up saving the day, unusual for him, by using the Goopgun on the Seaweeds.