Jen immediately felt her pants bulge, and a hot sensation centered on her crotch. Despite all reason, and every bone in her body screaming at her not to, Jen had to release the growing bulge. The lioness still in her gaze, Jen yanked her pants and underwear down, only to scream when she saw her growth.
Her clit was slowly morphing into that of a lion's cock. The little pink nub was two inches long and growing, with odd lumps developing on the tip. Jen backed away from the lioness, who suddenly seemed very interested in Jen. Her clit throbbed painfully, and Jen struggled to keep her hand away from it. The shaft grew until it was about two inches thick and more than a foot long. The lumps transformed into small points, which would become her phallic spines. Sensing Jen's arousal, they flexed several times which only made Jen that much more horny.
And to top it all, Jen felt what remained of her vagina bulge as two orbs pressed into the lips of her vulva. The lumps swelled, and soon Jen's new lion balls dropped into their furry sack. Her scrotum was covered in blonde hair. The balls, about the size of peach, complete with fuzz, hung low and smacked against Jen's womanly thighs. Repulsed and horrified as she was, Jen felt compelled to touch her new cock.
The lioness made some sort of call to her, and Jen looked up. The animal had turned around, lifted its tail, and was presenting herself. The dark pink lips of her feline pussy were coated in slime, and smelled too good for Jen to resist.