Tyra is taken from behind

"How touching! Seems you two are getting along." said the mysterious voice sarcastically, "On your hands and knees, now!"

Tyra knew she had to obey. Almost reluctantly she stopped kissing Kate and got up. She knelt, on hands and knees, with her ass facing the other girl. The front of the detested petticoat brushed her knees and the bed. She could hear Kate shifting position behind her, and give out a little outraged whimper. Tyra tried to look behind her, but the petticoat blocked her vision. All he could see was Kate's head and shoulders.

The blonde girl was biting her bottom lip, with an outraged and horrified expression on her face, looking down. The mysterious voice said, "Head down, Tyra. No peeking."

Tyra put her elbows on the bed and lowered her head to the pillow. At the same time she felt Kate's hands grasp her waist, and felt the blonde girl scootch forward a bit. Something hard pressed against her pussy and she tried to pull away, but there was nowhere to go. Kate sobbed once, the most miserable thing Tyra had ever heard, and she felt unbelievably sorry for her. Even more sorry than she felt for herself.

Kate pushed forward, and something hard slid into Tyra's cunt. Tyra realized Kate's cursed bikini had morphed into a strap-on cock. She couldn't see, but it seemed to be bigger than any guy she'd been with. By the time Kate's pink thighs met Tyra's black ass, Tyra guessed it was nine inches long. The feeling wasn't completely unpleasurable though, to Tyra's shame.