The sound comes from JoJo's Bizarre Adventure: Stardust Crusaders, where Noriaki Kakyoin makes the rero rero noise while playfully licking a cherry, a small character quirk that fans quickly turned into a running joke. Clips of the moment circulated through anime edits, TikTok videos and soundboards, where the strange repetition made it easy to reuse as a reaction. It remains popular because it is instantly tied to Kakyoin and to JoJo's over-the-top humour, giving creators a short, recognisable way to signal mischief without explaining the reference.