This kind of boing sound is a long-running cartoon and meme staple rather than a clip with one clear modern source. Variations of springy boing effects have been used for decades in comedic animation, then spread widely through short-form video, gaming edits and reaction memes. It stays popular because the sound instantly signals bounce, recoil or harmless embarrassment. Online creators often use it in the same family of exaggerated effects as the vine boom sound, but with a lighter and more playful tone.