Family Guy (1999) - 3x14 - Peter Griffin: Husband, Father...Brother?

Chris gets a new job as the water boy for the basketball team. After being around the black players, Chris becomes a super-cool black dude in a white person's body. Cleveland takes Chris to learn about his own Irish heritage at a museum. Chris later visits a library to look up his genealogy and is elated to discover that a black man (Nate Griffin) was part of his family. Peter tries to embrace his black culture by visiting a black theatre and club, but he doesn't get it. When Lois' parents visit, it is revealed that the Pewterschmidts' ancestors owned Nate Griffin. The Pewterschmidts' give Peter money to alleviate their guilt. Soon Peter begins to suffer the discrimination of being black.

While at a basketball game, Peter looks in the mirror and he sees Nate, who shows him that he has been selfish. Peter announces to everyone in the gym that he was a jerk for taking the money. He throws the cash in the air, and everyone scrambles to get their share, showing that all races are unified by greed. Meanwhile, Stewie plots to get rid of the head cheerleader so he can be on top of the pyramid.