SpongeBob SquarePants Season 2 Episode 19

While at a jellyfishing fan convention, SpongeBob meets Kevin C. Cucumber, who gives him a chance to see if he can join his club, The Jellyspotters. However, SpongeBob is unaware that Kevin is only trying to make a fool out of him, but soon discovers the truth after the club attacks him with a robotic queen jellyfish.