Feeling her girl juices drip down her thighs, Molly explores the Chronivac hoping she'll find something to relieve herself. Her mind is preoccupied by the ache in her mare-pussy. She's got one hand placed inbetween her hot folds. Massaging her insides, and pressing her fingers against her large clit, Molly moans. She'd like to use her other hand to fondle her breasts but she knows that if she does this right, she'll have both hands free to play with herself.
"Almost, just about got it..." Molly bites her lower lip. Her nipples are hard as rocks, and the ache in her sex grows with every heartbeat. Pressing the enter button, Molly removes her hand and heads downstairs. There, her older brother is downstairs playing video games. Her parents aren't around, it's just the two of them. Molly licks her lips, thinking of the changes that are about to hit him.
"Molly, that you?" Chris asked, not bothering to turn away from his game. His sister is completely naked, and clearly aroused. But all Chris notices is the odd smell in the air. Kinda like a barnyard.
"What the fuck is that smell? Is Molly smoking?" Chris wondered. He paused the game to loosen the collar of his shirt, then goes right back to shooting infidels. But as he continues, Chris' skin starts to feel weird. The more time passes, the more uncomfortable things get for Chris. He feels hot and sticky after just 5 minutes. He can't focus on his game.
Suddenly Chris' pants tent. It's a huge tent, about five inches long. He doubles over and pulls his pants down. His cock freed, Chris grimaces in pain as the heat migrates from his gut to his cock. His body feels like it's being stretched, all limbs (and his cock) are being violently pulled away from his body. Unzipping himself, Chris blanches when he sees what has become of his cock.
It's all wrong. What was once a fairly average human sized phallus is now something better suited for an animal. The growth doesn't appear to be stopping any time soon. When Chris first opened his jeans his cock was maybe seven or eight inches long and an inch thick. Less than thirty seconds later it has doubled in length and girth. The skin is thick, and spotted with pink splotches. The color of his dick is now a dark brown, maybe black. The previously rounded head is now flat, and curved to one side.
Inspecting this strange new organ, Chris peels back the skin that has bunched up around the base of his cock. Instantly, there's a smell that wafts up to his nose. The smell repulses Chris, and he thought that would make his dick shrivel up into whatever he had on his body. But his erection throbs harder than ever. A sizable bead of precum appears on the head. A thick ring of flesh appears on the middle of his shaft. Chris touches it, then is overcome by how sensitive it is. His balls now feel constricted, so Chris is forced to kick his pants off completely. Again, he sees that another part of his body has transformed to match that of an animal. Dark, leathery skin covers his scrotum, which hangs obscenely from his crotch.
"What the fuck is this? What's happening to me?" Chris says. Molly smirks and creeps closer to her brother, and his new donkey cock. Her own jenny cunt clenches over and over as the smell of Chris' dick enters her nose.