Jeff felt like doing something werid to be honest. He never understood why, but a cow's udder was something that fascinated him. Setting the time for transformation to finish to five minutes Jeff looks down at his belly, waiting for his change to start.
'Jeff waits for a few moments before he feels his belly stretching a little bit, not a lot but enough to be noticeable. Looking down he sees the center of his stomach is turning the pink of a cow's udder. Touching his pink skin he felt it had a rubbery texture. Looking down at his penis Jeff notices a very disturbing fact, but one that he had expected. His penis was shrinking and his testicales had dissapered. He should have expected this with Udders belonging to female cows, but it couldn't be helped, if anything it was just more exciting.
Four small nubs started to form on Jeff's pink patch of skin, his, or should he say HER teats. Jeff watches fascinated as the four tests grow longer, touching on of them and pulling in out of curiousity. The resulting shock send waves of pleasure down her spine, no wonder cows liked to be milked.
After the teats fully form they sag, laying on her belly as the skin starts to bulge. Her udder was coming in full, as the pink skin stretched and rounded, growing to the skins of a small beach ball before stoping, leaving Jeff with an empty udder.