Ernie is one of the best-known Muppets from Sesame Street, a character long associated with playful humour and an infectious, childlike laugh. Short clips of that laugh have circulated online as reaction sounds, where the sudden shift to a quiet hm makes them especially useful for jokes that land awkwardly or turn back on themselves. Because the voice is instantly recognisable and warm rather than harsh, creators keep returning to it for light comedy, nostalgic edits and short-form videos that need a quick, human punchline.