“Dattebayo” comes from Naruto, where it is known as Naruto Uzumaki’s signature verbal tic in the original Japanese version. The phrase became widely recognized through the anime’s global popularity in the 2000s and through fan edits, clips and meme compilations online. It remains popular because a tiny snippet is enough to identify Naruto instantly and give a clip an anime-specific punch. Sounds like Tuturu or Onii-chan show how short anime phrases can become reusable reaction audio far beyond their original scenes.