S17E11 We're on the Road to D'ohwhere
After another scrape which almost blows up the school Bart is sent to a boot camp and Homer is ordered to drive him there,thus missing Moe's tavern's annual outing to Las Vegas. Homer drops his son off and carries on to Vegas but feels so sorry for Bart he springs him from the camp. Marge,meanwhile,makes huge profits as an innocent drug dealer when she sells off Homer's old tablets at a garage sale. Consequently Lisa comes home to find both her parents in custody.