Bill Huxton sat on the couch in his living room, watching TV. His daughter Jenny ran through the room, holding a sticky note; maybe one of her little friends put it on the door as part of a game? His underwear felt strangely... empty, all of a sudden. Experimentally feeling the front of his pants, he came into contact with... nothing. His cock and balls weren't there anymore! Quickly running up to the master bedroom, not feeling his crotch moving against his legs anymore, he slammed the door shut and pulled his pants down.
In place of his (admittedly, and proudly) large cock and hairy balls was a small hairless slit, too small to be on his tall body. A vagina. He had a little girl's vagina. It looked horribly out of place on his masculine body, and intimately feminine. Fragile. It probably hadn't even started its period yet! That thought made him shiver most of all, sitting on his bed with his legs spread staring down at this foreign... thing which had replaced his beloved cock. Numb with shock, he wondered what had happened and if it could be fixed... and what would happen if it couldn't...