Sans is one of the most recognizable characters from Undertale, the indie RPG released by Toby Fox in 2015. The skeleton quickly became a fan favorite thanks to his puns, his laid-back attitude and his surprise difficulty as a boss. Short clips of his distinctive talking sound spread through meme compilations, TikTok edits and YouTube shitposts, where the blip now works as shorthand for sarcasm or impending trouble. Years after the game's release, the sound still shows up in reaction videos and short-form content because fans instantly connect it with Sans's personality.