Peter Griffin is the central character of Family Guy, the long-running animated sitcom created by Seth MacFarlane that first aired in 1999. His loud, over-the-top delivery has made many of his lines and reactions easy to lift into short clips, and this exaggerated cartoon reaction has circulated widely on soundboards and in social video edits. Creators reuse it because it instantly signals disbelief without needing any dialogue or setup, keeping it useful long after the original episode aired.