Ernie is one of the long-running Muppets from Sesame Street, known in Germany as Sesamstraße, where his playful friendship with Bert has made their shared laughter a familiar sound for generations of viewers. Clips of Ernie laughing circulated online as a short meme sound because the laugh is instantly recognisable, even without the picture, and carries a warm, child-friendly feeling. It remains popular for reaction videos and edits because it signals harmless fun rather than ridicule, making it easy to reuse across languages and audiences.