Adam felt his cock quiver, so long and so thick it was now between his pecks in the deep cleft over his breastbone. He tried to reach for it but his arms were too musclebound to do more that stick out at his sides, and still his muscles continued to swell and his cock to grow until it started to poke him on the underside of the chin.
He stiffened in pleasure, his pecs tightening and then squeezing the shaft of the mammoth cock. Oh god, Adam realized, he could give himself a titty-fuck! And with his own pecs!
Flexing his pecs and rubbing his chin against the member was all that he could do at first, but his excitement grew as he began to orgasm, every muscle tightening. Adam didn't also grow width wise but also length wise. With each passing second, Adam grew taller, inch by inch. The room's ceiling started to make Adam hunch. His face was pushed against his growing cock head and soon past that. His growth didn't stop either.