What is definition bazinga?

Bazinga is a catchphrase popularized by Sheldon Cooper, a fictional character from the American television sitcom The Big Bang Theory. It is typically used to indicate that a person has just played a practical joke or made a sarcastic comment. It is commonly used to emphasize the humorous aspect of a statement or situation. The word "bazinga" is not a real word, but is a made up term that has gained popular usage due to its repeated use in the television show The Big Bang Theory.