This sound is associated with Asriel Dreemurr from Undertale, the 2015 indie RPG created by Toby Fox. Fans recognize it as part of the game's dialogue presentation, where character-specific text noises help define personality without full voice acting. Short clips like this spread through Undertale fan edits, meme videos, and animation posts because they instantly identify the character in just a second or two. It still gets reused years later thanks to the game's large online fandom and the lasting popularity of Asriel-focused scenes.