Timothy got out of the shower and pulled the drain plug to let all his cum wash away. He looked at himself in the mirror, thinking back to how fun the brief experimentation with size had been. Freakish, yes, but -after a fashion- quite arousing...
He looked down at himself and his smile faded.
His cock, now fully soft looked ... wrong.
In fact, as he looked at it, it seemed to still be getting smaller!
"Holy shit..." he exclaimed, and grabbed at it. Desperately, although he'd just climaxed, he began stroking his penis back to full hardness. He looked nervously at himself and gagued his cock to only be about ten inches hard, now... He *was* still getting smaller!
"Ok, I'm probably just going back to my old size..." he muttered to himself as he went back to his bedroom to look for a ruler.