Mark went back to his computer, and brought up Bernice's stats again. He changed her sexuality to "100 % lesbian, except for her son" and added "incest" as a kink. Then when he hit enter he heard his mother make an odd noise.
When he returned, she looked up at his confused but then suddenly gave him some bedroom eyes and motioned for him to sit next to her.
Sitting down, Mark began to suck on her breasts once again but this time Bernice was fully into it, moaning all the while and rubbing herself until Mark suddenly seized her hands and started rubbing her himself, to which she did not object.
Then, pushing her down on the sofa, he picked up a cupcake and stuffed it in her mouth, and as she was chewing it spread her thunger thighs apart and started pounding her, Bernice squealing through a full mouth and making very excited sounds as he did so. Finally, when the two had orgasmed some, he lay ontop of her big, fat, sweaty gut and was groping it. Bernice said
"Oh I hope Peg and Marge don't find out, I can't live without their clits and their yummy food making me so nice and fat."
Mark replied by making out with Bernice some and the two of them falling asleep naked on the couch.