Dean stood there, admiring his new visage, toying around with his blonde hair and rubbing himself here and there. The feel of rubber on rubber was quite arousing; so much so, that he didn't begin to notice himself deflating.
It wasn't quite big at first. It started with the feet; after a few seconds, they shriveled up to oval-shaped pancakes. Then his chest started to cave inward. His face became more and more gaunt by the second, and his buttocks started to collapse. His penis, fully erect from the rubbing, slowly became limp as it lost the air to sustain itself.
Soon Dean ran his hands over a strange object. He came out of his ecstasy to notice there was a small air hole where his belly button once was, and air was rushing out of him. He panicked; he reached quickly to close the air hole, but found his fingers and hands collapsed as they tried to exert pressure on the latch. After some struggle, he noticed he was losing control of his hands. In fact, his whole body felt rigid and lacking sense. He was already halfway deflated, his eyes now meeting his table's edge, and was falling further down by the second. His arms and legs were exhausted of air. His crotch soon followed. His hair started changing, and eventually came in to meet his original style and color. His head completely deflated. Sure enough, the air escaped the extremities of his body, his stomach remaining the last, yet rapid decreasing, bastion of air.
Finally, he was fully deflated, without a puff of air to sustain him. His air hole magically closed, and retracted to inside of him. His facial features melded with the rubber, becoming simple decals. His mouth and anus opened up, tunneling inward to use as holes for various sexual deviance. His scrotum beheld a sealable pouch, linking to a mock urethra forming in his penis. There he lay, a fully ready male sex doll. Just add air.