Big Man on Hippocampus
Family Guy Season 8 Episode 10 (01/03/10)
While being a contestant on Family Feud, Peter ends up getting a fight with the host, Richard Dawson. After getting knocked in the head, Peter ends up with amnesia and can't remember Lois and his family. After being reaquainted with sex, Peter decides to take on the bachelor lifestyle. Lois ends up moving out and going over to Quagmire's for dinner. Just as they're about to have sex, Brian grabs Peter, who apparently got his memory back from a fight with the chicken, and he stops the two and proclaims his love for his wife again.