The laugh comes from Austin Powers: The Spy Who Shagged Me, the second Austin Powers film released in 1999 and starring Mike Myers. In the film, the over-the-top comic tone makes the laugh work as a piece of character comedy rather than a natural reaction, and that theatrical quality is what made it easy to lift out of context. Shared on meme soundboards and in short videos, it became a shorthand for scheming, gloating and mock villainy. It remains in use because listeners recognise the film reference instantly, even in a clip lasting under two seconds.