The Peter Is Going Insane Theoryis a Family Guyfan theory andcreepypastahypothesizing that Peter Griffinwent insane after the deaths of his entire family and the events of the series are all in Peter's mind as he gradually becomes more insane. The theory was first posted to Reddit's/r/Fan Theories subreddit in 2012 and went viral on Tik Tokin late 2022 as users encouraged others to look it up, touting it as scary and disturbing.
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