Brain fart sounds have long been used in cartoons, comedy sketches, and online videos as shorthand for a mental blank, because the raspberry noise is instantly understood without any explanation. On soundboards and in meme edits, this type of clip is commonly dropped over confused faces, wrong answers, and moments when a plan falls apart. Its appeal is simple and visual: the sound matches the expression, the joke lands in under a second, and viewers recognise the gag immediately, which is why creators keep reusing it for short-form comedy.