Shrink rays are a classic science fiction device from pulp stories, comics and animated films, where an inventor's beam makes heroes, villains or everyday objects comically small. Online, the idea became a staple visual gag for gaming and cartoon edits, especially in sandbox games where scale can change instantly. This short zap sits alongside other cartoon weapon effects, similar to a pew pew laser sound used for blasters. Its falling pitch signals shrinking without dialogue, which is why creators keep reusing it for quick transformation jokes.