Derick sighed, feeling the slightly throbbing dick inside her gluttonous pussy. "I can't just let it stay there anymore. It's going to really become detrimental at this rate." She figured, rubbing her warm belly; the cum inside sloshed around from this, eliciting a moan from Derick. Suddenly, the tanned beauty felt something strange in her loins; her old dick had now grown an inch in length, and was at this point actually penetrating into her womb. "No, get out! Get out of me!" she moaned, feeling the dick cumming once more and her vaginal muscles autonomously milk and pleasure it.
Derick threw her head back from the ecstasy, feeling her belly increase by another centimeter or so. It would seem that the dick itself is making use of it's protein rich semen, and actually growing and becoming stronger as a result. At this rate, Derick might end up with a dick so big inside her, she might never be able to take it out. "Oh god, I don't want this anymore! Please stop!" She moaned in desperation as her pussy would not cease pleasuring its lover, making it produce more and more cum. With tears in her eyes, Derick lay on the floor as her pussy milked the cock, making it cum too much and filling her overstuffed womb.