Bazinga comes from the American sitcom The Big Bang Theory, where Sheldon Cooper, played by Jim Parsons, uses it as his signature catchphrase after a joke or prank. The word was introduced during the show's early seasons and quickly became one of its most quoted lines, helped by Sheldon's distinctive delivery. As clips circulated on social media and video platforms, Bazinga moved beyond the show and became a shorthand reaction for teasing, tricking someone, or landing a punchline. It remains popular because it is short, instantly recognisable, and works without any context.