Family Guy: Season 4 Episode 22: Sibling Rivalry
Starring: Seth MacFarlane, Alex Borstein, Seth Green, Lori Alan, Fred Tatasciore, Butch Hartman, Wally Wingert, Phil LaMarr
Length: 24 minutes
Family Guy: S04E22 Description: Peter is set to have a vasectomy against his will, but has an accident at the sperm bank, which causes Stewie’s rival sibling to be born. Meanwhile, Lois gains weight after an angry Peter refuses to have sex with her anymore.