Jeff found an option that caught his attention. Before selecting it he stripped down naked. The thought of it was giving him a noticeable boner. Finally he was ready and selected it. At first he felt a hot feeling down his crotch, looking down he saw his member gradually shrinking while getting thicker while also pulling back into his expanding ball sack. Reaching down he felt that his skin was still rather sensitive, but getting thicker and thicker as it ballooned into a narrow cylinder which became darker by the second. It was only connected to his body via two parts that seemed to go from the center of it back to his crotch. Then as it ballooned to about half a foot in diameter tire marks started to form at it's circumfence. It's sides also turned into the spokes of a mechanical wheel of some kind of vehicle.
Curiously Jeff tried to spin it. It looked and felt just like any rubber wheel and spun freely. Jeff noticed that he was able to push together the breaking pads attached to it. His body shivered when he realized his privates were a wheel now. He got down on the floor putting his weight on it, feeling the floor as he crawled on it. "Wow", he said to himself, "This really is something new".