Mom's the Word
When Peter's mother dies, he befriends her longtime pal Evelyn, who tries to seduce him. In the meantime, Stewie feels despair upon dealing with the realities of death.
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Lois gives Peter grief for eating raw cookie dough. At work, Peter is bored while sitting through a meeting until his stomach starts to give him trouble and he soils himself trying to get to the restroom. When he walks into the house, he is greeted by his friends and family and is told that his mother has died of a stroke. After the funeral, the family sorts though Thelma's belongings when Thelma's friend Evelyn stops by and offers to catch up with Peter later. Visiting with her in her at the retirement village, her company comforts Peter. Evelyn meets with Peter's friends at the Clam but they are disturbed by her and bolt. When they admit feeling comfortable around each other, Evelyn plants a kiss on Peter which shakes him up.
Peter tells Lois about what happened and is told to talk things over with her. She dismisses it as an effect of her medicine but when they spend the day together her antics take on a decidedly sexual theme and Peter demands they quit seeing each other. Peter goes to visit the grave of his mother and Evelyn meets him there, telling him that he is the first man to pay attention to her since her own husband died. But when they hug, Peter snaps her back, killing her as he leaves her with the cemetery groundskeeper to take care of.