Jeff just couldn't get the memory of how good it felt being milked out of his head. He wanted to feel that a lot more often. So he backed out a few tabs and opened up the custom editing window he selected himself as the target and almost began making the changes, but stopped. He didn't know whether or not to make a new udder, or turn his cock and balls into something that doubles as one?
The longer he thought about it, the more he liked the second option. So he went with the hybrid option, though he did doubled up on his dick count since spending an hour or two a day just being milked was pretty inefficient. And he didn't like how his sack stayed the same size. He wanted an udder, so he would have an udder sized scrotum that would swell in size the more nut milk he created and the longer he went without being milked.
In order to accommodate his new growing body part, he adjusted his hips to be wider apart, inadvertently giving himself a very feminine looking set of child birthing hips and quite the thigh gap. It also would give him a bit of an ass as well. He changed his genitals to be less ugly looking by smoothing out the skin, making it colored better and removing his pubic hair entirely. Last but not least, he let the program make some minor adjustments his body structure so that he will be able to easily carry around a full udder without and additional complications.
Now satisfied with his edits, Jeff only had to press accept, but he hesitated again. And after a small internal debate, he changed his target to be all men world wide, and made it so that every man has a 1 in 1000 chance of growing this hybrid udder. He guaranteed himself as being one of them, then accepted the edits.
Unlike before, Jeff could actually watch his thighs begin to shift apart as his hip bone widened significantly. Once he had a thigh gap large enough to fit his entire fist through without touching either leg, they stopped widening, but his ass and thighs took over and began swelling a little bit too. His lower spine changed as well, becoming a lot more flexible over a much shorter distance. He wondered why it changed like this.
However, he wouldn't figure it out until later when his udder would become so heavy to support with just his legs that he would be forced to bend over and carry it while on all fours. His new spine would allow him to bend in a much easier manner and wouldn't strain itself either in doing so.
Jeff watched as his ball sack began to bloat, turning hairless and smooth in the process. It gained a bit of a pinkish hue, and swelled up to around the size of a watermelon. His dick then split in half, turning into 2 dicks, finishing his change. Jeff poked his new udder gently, and felt an odd pressure. It didn't hurt or anything, but made him feel kinda bloated. It didn't feel like he had to pee either. It just felt like there was liquid that could come out if he wanted it to, but wasn't anything pressing.
Honestly, it felt oddly similar to how his ex-girlfriend's boob felt when he had poked it one time. Squishy, but with a certain firmness that felt good. He somehow knew that inside the squishy sack, was nothing but nut milk, and that his balls were now located somewhere further inside his body, and not just floating around inside his udder.
Jeff slowly took a few practice steps around the room in order to get use to his new center of balance and wider stance. He then tired out walking on all fours, and found it extremely comfortable to do so. He contemplated making this his new normal standing posture, as that was just how comfortable it felt, being on all fours. His indecisiveness led him to giving it a test run and decided to remain moving around on all fours for the rest of the day whenever possible.
Jeff also had one other realization. With his new udders size, he could actually reach and suck his own dicks now. And he had to admit that he was both curious about how it would feel, and how his nut milk tasted. But he wasn't sure if he should do it either.