Lobotomy as internet slang primarily refers to a subgenre of surreal and nonsensical brain rot humor that peaked in late 2023 following the Geometry Dash 2.2 update. Often called Lobotomy Dash, these memes originated from chaotic user-created levels filled with sound effects like 'Fire in the hole!' and the iconic green 'Normal' difficulty face. The term has since expanded to describe any piece of media that feels intentionally mind-numbing, absurd, or sensory-overloading. It represents a shift in Gen Alpha and Gen Z humor toward post-ironic, surrealist content where the lack of a coherent punchline is the joke itself.