Keychain - TBBT - Bazinga

"Bazinga" is a catchphrase popularized by the character Sheldon Cooper from the TV show The Big Bang Theory. Sheldon typically uses the word after playing a prank or making a sarcastic remark, as a way to highlight the joke. It became a signature expression for his quirky and often socially awkward humor. The word has since become widely recognized by fans of the show and is often associated with nerd culture and comedic mischief.