Jackie was a mess. Steve was a mess. The sheets were soaked and puddles of cum were all over the floor. She was in complete awe; she had never seen a cock shoot so much cum from a single orgasm. Steve's body jerked and spasmed uncontrollably as cock launched rope after long rope of his hot, thick jizz high into the air.
The experiment had been a success, exceeding even her wildest expectations. But it came at a price and with unexpected side-effects, side effects that she could not control and had no idea yet on how to fully contain. Jackie had never tackled a cock this big and it was increasingly proving to be way more than she could handle. She was a big woman and liked her men "big and well hung" - but Steve was far and away over the top in the "well hung" department. Words like "big" and "huge" and "enormous" simply didn't give Steve's cock its due. His penis had become a true behemoth, its proportions exceeding any Jackie had ever encountered.
Steve arched his back and bucked his hips hard against Jackie's hands; his cock thrashed wildly as his heavy, grapefuit-sized nut-sack flopped heavily with each stroke. As a consequence, the hard stimulation on his testicles forced them to continue churning out more of his thick, milky nut-juice. His urethra felt like it was on fire and every nerve ending in his cock felt as if they would explode. "Arrrrrrgggggghhhhh," Steve yelled between gritted teeth, arching his back violently as another volley of cum shot from his huge glans. He fought hard against the restrains around his ankles and wrists but they kept him fast in place on the bed. "FUUUUUUCK!!! I can't stop! Arrrrrrgggggghhhhh!"
Jackie made a mental note that she would need to make major adjustments to the formula, but for now, she was still trying to comprehend the sheer volume of fluid his enraged, engorged monster was spewing. She was totally dumbfounded.
She increased the grip on the base of angry cock as best she could with one hand while continuing to furiously stroke his shaft with the other, feverishly milking it for all she was worth.