Michael Jackson's 'hehe' is one of his most recognisable vocal ad-libs, a playful giggle he used across songs and live performances to add personality between lyrics. Fans began isolating the tiny vocal moment and sharing it as a short clip, where its unmistakable tone made it work perfectly as a reaction sound. It spread through meme edits, TikTok videos and soundboards, where creators use it to signal mischief or amusement without needing any words. Its brevity and familiarity keep it popular long after Jackson's peak chart years.