Jen struggled even harder in Katie's grip as she felt herself begin to tingle all over. With the giant girl's finger covering her mouth, she couldn't let out any protest. A sudden jolt up her spine made Jen jump, and to her horror she glanced down and saw her body starting to change.
"Yes!" Jo leaned in closer, gasping in delight. "It's working! She's changing into a cock!"
The process took only a few seconds but each aching change felt like forever to Jen. Her breastless torso began to slim, arms and legs began to shrink, and her hands and feet seemed to dwindle into nothingness. Her neck elongated, thickened, her head suddenly snapped up towards the ceiling, lengthened, and fattened. Her lips pressed out, her nose vanished, hair fell out. Jen could only watch in horror as below her body lost all shape, generalizing to a thick tublar mass of quivering muscle.
Two balls formed at the base of her shaft, hanging, and her cocktip filled out to full. She felt suddenly heavy, suddenly immobile, and fell forward, limp.
There was nothing left of Jen Smith now. The only hint that the strange creature Katie now held in her hands was human were two blue eyes complete with female lashes on either side of a cocktip, set above a circumsized roll of foreskin, beneath which a soft limp shaft and two balls rested.
Katie gripped Jen at the base of her shaft, letting her wrinkled hairless scrotum flop down below, and lifted the strange creature into view, staring into the freakish eyes staring back at her in shock, looking across a cocktip that tapered to a slit.
"Hello, Jen." Katie grinned evilly. The penis/girl creature couldn't move, could only blink her eyes.
"That was fucking hot." Jo chimed in. "Let me see her! I wonder if she really works!"
Jen's eyes widened in renewed horror as her shaft flopped around as she passed off to Jo. The sexy Asian lifted Jen into the palm of her hands and stared down, grinning, squeezing her balls and rubbing a finger over Jen's smooth shaft.
Jen blinked as she was suddenly engulfed in pleasure from Jo's soft touch. The girl rubbed again, tickling under Jen's 'chin' several times, and Jen felt a strange warmth as she grew aroused. Her shaft lengthened out and she felt herself filling like a balloon. Now Jo raised Jen to her mouth and gently licked her slit. The penis/girl could have moaned as prickly sensations of stimulation exploded from her tip to her base. She felt herself stiffening, saw herself getting bigger.
Suddenly Jen was plunged into darkness, as Jo engulfed the hardening penis's head into her mouth and sucked, growing Jen huge and hard. In the darkness Jen could see a line of teeth and the back of Jo's throat flying back and forth around her, and suddenly the girl gagged.
Jen slipped back out of Jo's mouth and emerged as a tremendous 12" long and 2" thick cock fit for a porn star. She blinked her long dark lashes and felt... full. The sensations of being sucked on had been amazing, and now she wanted - no, needed - to release the growing pressure building inside of her. Jen throbbed, her eyes pleading for more.
"Awww." Jo grinned, wiping away some saliva from the edge of her mouth. "Our nice big cock girl wants more. Should I give it to her, Katie?"