8 Family Gay

Peter participates in medical experiments to pay off a debt. One includes his being injected with the "gay gene". Peter then becomes involved in a gay relationship, leaving his family heartbroken. Seeing how unhappy Lois is, Brian and Stewie plan to take Peter to a camp to "turn him straight". When Lois finds out she stops them, since she believes Peter has the right to be happy with whomever he chooses. Later that night the gay gene's effect wears off, and Peter returns to his family.