Jeff had the an idea, he went on the assumption that more is always better!
Jeff squirted more of the sparkling lube into his fist and renewed his urgent stroking of a hard cock desperate for release. He would have preferred fooling around with Michael, but the heightened sensations coming from the lube. Jeff liked to tease and coax himself close, then back off, enjoying the crescendo of the pulsing blood in his ears, as his attention became entirely consumed by the ache for release.
All the while he kept up with his hand stroking, Jeff noticed something... different. His penis felt more tender, the skin much more sensitive. He ceased his stroking to inspect his penis. The normal hefty girth and length seemed different, the circumcised head had shrunk, it became more pointed at the tip. His penis body looked like it was thinner, but his balls were significantly larger, equal the size of tennis balls. Jeff about fainted when he saw dribbling from the end-hole some yellowish colored pre-cum.
"What the...." Jeff gasped, he about in a state of shock.
His human penis had changed, it looked more like the cock of an animal compared to the overly healthy contours it was when he awoke in bed. He thought his waist had narrowed, his thighs feeling more muscular, and they had a wealth of new hair sprouting on them and the lower leg as well.
Jeff rushed to get a look-see of his changed self in the bathroom mirror, as he entered the room his footing slipped out from under him, he almost falling on the floor. "My toes," Jeff yelled, he taking note how they had changed color, turned a dark brown, and were merging. He lifted up his right leg to be chest high, feeling how the more muscular thigh and knee had become the hind flank like an animal leg. He felt of his changing foot, the blood pulsing hard through the veins.
"How is all this possible from some crazy penis gel lube?" Jeff said, as his mind was busily wondering about that, the sight of his then furrier chest, shoulders, upper arms had him combing his fingers through the thickening pelt of animal like fur.
Jeff was glad he was home alone, and that neither of his parents would return home anytime soon.
As his youthful boyish self was fast disappearing, the quick check again as to his crotch caused some new alarming concerns. "Oh crap," Jeff exclaimed, he grabbing at, feeling of his cock base, it having grown for him a furry sheath, it hung just two inches below where he had a furry navel.
All the shocking revelations caused him to keep one hand feeling of, or stroking the length of his rosy colored, as very sensually sensitive cock. Meanwhile, his other hand kept wandering, combing through thickening fur, feeling the growing ache in his forehead, and scratching in places where the fur had not gotten thickly.
He decided to throw the vial of lube into the toilet and flush it away for all the horror it had caused him. As Jeff walked with elongated strides and changing feet to get the vial, he tripped on a throw-rug he had beside his bed. The stumbling sent him falling face down onto his bed, and ready to yell from the fright of falling, his mouth open, Jeff near swallowed the vial where it was lying on his bed.
"Oh shit, crunch," the vial in his mouth was broken by his teeth, the fuller contents of the vial then flooding around inside the mouth of Jeff.
The taste of the yuck was vile, and worse it seemed to blend with his saliva, thinning greatly, and seeping down his throat. Suddenly, Jeff felt his entire body begin to shake, his cock sprung up in a full erect state, the tip coming very near his chin.
Jeff rolled over and tried hard to spit out the residue of what lube remained still in his mouth. He felt instantly horny, wildly horny, like a male sire in rut horny! He began pumping his strange feeling new cock, which in turn worked to accelerate more physical change to his body.
Jeff became mentally disoriented by the rushing wealth of so many sensations. As he rolled around on his bed, he drew up snug to him belly his changing legs and horny feet.
"Oh how it hurts so good," Jeff moaning said.
"Oh shit," he squeaked, still resting on his back, he on his bed, seeing then blood dripping from off the top of his forehead, staining the bed sheets. As his hands ventured to touch where he was bleeding, they felt there the sprouting of horn buds, as sharply pointed horns were erupting from out his skull.
"What is happening to me," Jeff cried out aloud, as just then his new cock and much enhanced size of scrotum did blast forth a spewing load of semen, the slime plastering Jeff about his face.