Noriaki Kakyoin is a main character in JoJo's Bizarre Adventure: Stardust Crusaders, a series known for dramatic poses, memorable dialogue and a large online meme culture. The ba dum tss itself is a much older comedy device, a short drum rimshot traditionally played after a joke to underline the punchline. In fan edits and soundboard clips, the two ideas are combined so the familiar sting can instantly turn a JoJo moment into a joke beat. That simple, instantly recognisable timing is why creators keep returning to it for short-form videos and reaction edits.