Family Guy - Season 12 Episode 17 The Most Interesting Man in the World Parental Discretion Advised, that's how you know it's good.
Overview: When Peter takes Stewie to the park for some quality father-son time, he mistakenly takes the wrong baby home, prompting Lois to call him an idiot. Determined to prove to her that he's a responsible adult, Peter goes on a business trip to Chicago and returns as an intelligent, classy person.