Rob decided he should relieve his filled bladder as he thought about his new developments and stepped into a stall and closed the door.
He unbuttoned his shorts to find the fly in his new underwear. He stopped for a second as he noticed the red band and CK logo. "These aren't the same underwear... these are the ones I wished I had on." He thought to himself.
He quickly thought about wearing a thong and watched in amazement as they began to change into exactly that. At the feeling of material climbing up his ass he quickly thought back to the Calvin Klein briefs and they returned.
As the fly reappeared he opened it with his big hands and pulled his member out, sighing as he let go of the force.
Looking down and watching as he pissed, a sly smile moved across his face. He always did wonder what it would be like to be uncut. As if on cue as a fold of skin developed and slowly took in the head of his penis.
"Sweet!" Rob said just as the door opened...