The line comes from Atlantis SquarePantis, the 2007 SpongeBob SquarePants special where the group travels to Atlantis and Plankton sneaks along hunting for advanced weapons. Finding an arsenal, he expects doomsday power and gets an ice cream shooter instead, turning a classic villain moment into a punchline. The clip later spread on soundboards and in edits alongside the spongebob sad song and other running gags like "My leg!" because fans reuse Plankton's disappointed delivery whenever an overhyped reveal turns out cute, weak or totally useless in practice.