The line comes from Family Guy, the animated sitcom created by Seth MacFarlane, and is spoken by Peter Griffin, the show's loud and tactless lead character. Short reaction lines from the series have long been clipped and shared online, and this one spread as a soundboard and meme sound because it sums up complete disinterest in four seconds. It remains popular in edits and chats where a normal polite response would feel too weak, letting one familiar cartoon voice say the dismissive part out loud for everyone.