In the dark........Ahhh! I felt his hands on my ass high up, and his hard dick probing and rubbing along my taint and crack, trying to find my donut. ... had come as prepared as I could have under the circumstances. They gave us these little bottles of airport shampoo and conditioner along with soap and toothpaste. I had tucked the conditioner in the wasteban of my boxer's earlier and now used it as I reached behind and stroked it on Greg's pecker. I also put some in my butt-crack and slowly. Most of the things seemed the same but for one small detail. The instructor and her horse, a studly stallion with the shiniest black coat I had ever seen, had somehow merged together, forming a being that was half human, half animal. It took a few seconds before I realized she had transformed into a centaur. As I stared at her, the world around us started to fade. But this effect was not figurative, our fellow riders were beginning to vanish, soon leaving the instructor and me alone. By the. She decided to stick with her plan to play dumb. "Wow, Sonni! This is a surprise. I'm glad I got here on time. Your text said to come prepared for fun, but this is not what I expected. I brought your clothes and everything you asked for. Um, where did you hide your car?" "Oh. I had a friend drop me off. I told her to leave it at the parking garage." "Um, no other clothing?" "She took it with her. I didn't think you would mind." "No, of course not. It must have been kind of weird explaining that. She turned just in timeto see John behind her, a strange red object in his hand. It had a large redball on the end, about the size of an apple, connected to a long metal tube,about six inches long. She could hear something sloshing around inside theball. "What's that?" "It's to lube you up Grace. I don't want to fuck you dry," John moving behindher. She jerked her hips when she felt his fingers pulling apart her cheeks, fingerson each side, feeling her anus spreading wide. "NNNOOO!" Now she.