High Quality Content by WIKIPEDIA articles! "Petarded" is the sixth episode of Fox`s fourth season of Family Guy, which originally broadcast in the United States on June 19, 2005. It was written by Alec Sulkin and Wellesley Wild and directed by Seth Kearsley. The episode sees Peter taking the MacArthur Fellows Program to see if he is a genius, however he performs poorly and is declared mentally retarded. Attempting to take advantage of the situation, he accidentally hospitalizes Lois while attempting to steal from a restaurant and loses custody of Meg, Chris, and Stewie.