I don't know quite know if your asking about a specific episode or just a general question for the series BUT the only thing I can think of is Season 7|Episode 6 Tales of a Third Grade Nothing
Family Guy Petoria Episode.
The 255th episode aired on Family Guy was "Peter's Sister"
No.
season 10, episode 22. Family Guy Viewer Mail 2
It is an episode of Family Guy
Family Guy Viewer Mail, season 3 Episode 21
In the "Family Guy" episode titled "The Boys in the Band" (Season 14, Episode 11), a subplot involves a woman in labor. While Peter and his friends form a band, the scene humorously contrasts the chaos of their antics with the intensity of childbirth. The episode highlights the show's signature mix of absurdity and irreverent humor.
The retarded rooster is seen in episode 2 of season 8 of Family Guy which is entitled "Family Goy."
family guy viewer mail
Christmas Guy
I don't recall a Family Guy episode, there was however a Robot Chicken Christmas Special where Santa tells a child his mother did not die well. There was also a similar quote from American Dad, Stan Smith tells a soldier he will live but not live well. You may be confused since Seth MacFarlane voiced Santa in the Robot Chicken Christmas Specials & voices Stan Smith.
She did guest star on Family Guy. The episode that she guest starred on is season 4 episode 24. The episode is called "Peterotica".