"That was incredible!" Kevin sighed. He patted his fat pig stomach, full of Mary's milk. Mary smiled and nuzzles closer to her boyfriend. Both their cocks lay spent on the ground, slowly retreating into their sheaths.
"What are we going to do with her?" Mary asked, looking at Valerie. Kevin shrugged, and kisses Mary's snout. She giggles, and presses her eight breasts against his chest. Mary wiggles back and forth, stimulating her nipples, and causing her sow cunt to drip.
But their foreplay in interrupted by a series of distressed squeals. The two half-pigs look at Valerie, whose changes haven't finished. She ingested so much cum and milk, it's the equivalent of a higher dose of the vials. So unlike Kevin and Mary, her transformation isn't stopping at a pig-human hybrid.
Her arms and legs seem to shrink, and lose all their form. They're fat, stocky limbs that service no purpose other than walking. Her hips crack, and leave her on all fours for the rest of her life. The wiry pig hairs on her body grow longer and thicker, until she's entirely covered in fur. Her tail gains a few wispy hairs on its end, as it extends lower and straightens out.
Suddenly there's a shaking in her ass, and Valerie feels something being sucked inside. Kevin and Mary are able to see that it's her pussy that was just absorbed, leaving more room for her testicles. Valerie cries out in need, as the rest of her body fattens up, and her penis once again becomes hard. Her neck becomes so large it's almost impossible to tell she has one. Her snout is slick with saliva and snot, and her large tongue is able to wipe it all away.
Two tusks edge out of her mouth, breaking other teeth in the process. She spits them out, and cries for help. But all that comes out of her mouth are squeals and oinks. She tries to stand up, but her new body forces her to her stubby arms and legs. The final change sets in, reducing Valerie's brain to a boar's.
The transformation is completed as Valerie feels her balls grow tense and pull up right under her ass. She doesn't cum, but she does take a massive dump on Mary's bed.
"Gross." Mary said, watching the poop fall from Valerie's ass. The new boar sniffs his droppings before climbing off the bed. He leaves the room, in search for something to eat. Kevin and Mary follow, mostly because the smell in the bedroom is too much.