Karyn beamed deviously at Biff who, though he wasn't sure why, suddenly felt uncomfortable.
And then things got really, really weird.
Biff felt his a great pressure, like he was twisting inside. And then as though something were growing off him. He pulled back, but as he withdrew, it was like he was leaving flesh behind. Almost in a flash, like a cell splitting, another Biff split off his body. There were two identical Biff Meadows there before Karyn.
Wielding her power and her perversion, Karyn just laughed as both Biff's clothes vanished in a flash.
She moved in, grasping both cocks at once. In her right hand, the cock swelled, larger and larger until it was over a foot in length. Karyn bent over and let it enter her, almost impossibly while, the other Biff's cock started to shrink away. Just as it vanished altogether, that Biff started to freak out and, though he tried to run, felt forced to stay as changes swept over his entire body.
He cock was gone, replaced with full female genitalia as his body moved speedily along, eager to catch up. In seconds, one of the Biff's was a terrified, fantastically endowed blonde woman. Karyn beamed, running her hands down the woman's body, touching her between the legs. First with her fingers and then with her tongue.
From behind, one Biff was fucking Karyn while the other, female Biff, was being eaten out by her.
