S1E4 : Mind Over Murder

At Chris' soccer game, Peter gets into a fight with a woman, that he thought was a man, and punches her in the face. After being placed under house arrest, Peter becomes restless and ends up turning the basement into a full bar. Lois begins singing each night and becomes the main attraction. Meanwhile, Stewie creates a time machine in order to avoid teething pain, but ends up taking back much more than that.