The boing is one of the oldest cartoon sound effects, built from plucked and spring-like instruments to imitate elastic movement in early animation. Studios reused it for springs, pogo sticks and bouncing characters, and it became a shared shorthand for slapstick in television and film. As meme editing spread online, creators lifted the familiar twang for short clips, Mario jump parodies and reaction videos. Its spelling with extra o's online reflects how long and wobbly the effect feels, which helps it stay recognisable even without the original cartoon scene.