The Blblbl Lou clip comes from a user-uploaded soundboard with no documented original recording, so its history lives in how people reuse it. Short vocal goofs like this travel through meme pages and editing apps, where an eleven-second raspberry noise is easy to loop or trim. It sits naturally beside other comedy staples such as the classic fart gag and the cartoon fail sting, working as a wordless punchline for pranks, bloopers and playful roasts that need a silly, unmistakable button.