The chant comes from Triple Trouble, a song in the fan-made Friday Night Funkin' mod Vs. Sonic.Exe, where Tails, Knuckles and Eggman face the corrupted Sonic.exe in a singing battle. Tails's strange, wordless vocal section stood out because it sounded cheerful yet unsettling, and fans clipped it for short videos. It spread through YouTube edits, TikTok memes and soundboards, where the eh eh eh a u eh a pattern became a shorthand for goofy horror. It remains popular because it is short, instantly recognisable and easy to drop into Sonic, Friday Night Funkin' and creepypasta jokes.