Stewie Griffin is the infant character from the American animated sitcom Family Guy, which first aired in 1999 and was created by Seth MacFarlane. Voiced by MacFarlane himself, Stewie is known for his sophisticated vocabulary, ambitious schemes, and distinctive laugh, which became a recognisable shorthand for mischief online. Clips of the laugh spread through YouTube compilations, meme pages, and soundboards, where creators reuse it as a quick reaction cue. Its staying power comes from instant recognition: even a two-second giggle tells viewers that a character, or the creator, thinks they have just won.