Family Guy Season 5 Episode 13
Bill and Peter's Bogus Journey
Peter helps Bill Clinton fix his flat tire and soon the two become best friends. When Lois feels Bill is being a bad influence, she goes to talk to him and ends up sleeping with him. When Peter finds out, he tries to get revenge and have an affair of his own, but can't when he realizes how much he loves Lois. Meanwhile, Lois and Stewie try to potty-train Brian.