The cartoon boing is a widely used comedy sound effect rather than a quote tied to one specific character or scene. Its spring-like tone comes from the long tradition of slapstick cartoon audio used to exaggerate motion, impacts, and elastic gags. Online, it became a staple in short-form edits, memes, and reaction clips because viewers instantly read it as playful and absurd. It still shows up in modern videos whenever creators want a bounce, stretch, or pop to feel deliberately silly instead of realistic.