Biting her lip, as her expanding body provided further increased pleasure, Derick couldn't hold it in anymore. "Oh who am I kidding? I'm fucking loving this!" She cried, bringing her hands to her much more sensitive nipples. "I just want to be filled with warmth by this lewd dick." Maneuvering her thicker thighs, Derick placed the balls against the floor, and held them with her hands. After that, she started bending her legs, so that she could thrust her body up and down while squatting, almost like she was using a dildo. Her pussy didn't seem to resist this action; probably because Derick was now following with what it wanted. Additionally, the dick coincided its thrust with Derick's, so that when she went down, it went up and vice versa. The dick's tip was still lodged into Derick's womb, so it's shaft was able to rub against the tight wet walls of Derick's vagina and cervix opening.
"Yeah, keep giving it to me!" She shouted, feeling her pussy muscles milk the dick for all it's got, unleashing another spurge of hot cum into her womb. Her belly expanded slightly, but not as much as her breasts and waist/butt. "Ah god, it feels phenomenal; I was crazy to fight back the whole time!" Derick yelled, getting onto her bed and laying down, her huge butt pushing her body upward. Still grabbing the balls, Derick pushed the dick really far in, so that it's tip hit the deepest part of her womb; at this point, the entirety of the dick (minus the testicles) were now lodged inside Derick, forever stuck so that it can keep releasing cum. "More, more!" She screamed, fastening the dick's thrusts of her own accord, seeming to want more than what the dick was able to give.