"Bazinga" is widely known as the signature catchphrase of Sheldon Cooper from the CBS sitcom The Big Bang Theory, where he uses it after a prank or joke. The line became a meme because its delivery is so short and recognizable, making it easy to drop into reaction edits, prank reveals, and sitcom-style punchlines. It remains popular in short-form videos because one word is enough to signal, "that was the joke," without slowing down the clip.