The exact recording behind this clip has no confirmed origin, which is typical for user-uploaded reaction sounds that pass from phone to phone before landing on a soundboard. What made 'omgwowwwww' stick is its timing flexibility: the short 'omg' works as a beat of disbelief before the stretched 'wowwwww' lands the joke, so editors can duck it under dialogue, captions or zooms without it clashing. It rides the same wave as other short reaction shouts that streamers and TikTok editors reach for when a moment needs instant, exaggerated amazement.