Season 7Episode 822m
Family Gay
2009-03-086.5 rating
After buying a brain-damaged horse, which causes over $100,000 worth of damage, Peter participates in medical experiments to make some extra cash. One of the genes he is injected with turns him gay, which later results in him leaving Lois for another man. Although the family is crushed, they quickly realise the most important thing is that Peter is happy.