Like a virgin

Sarah was lying with her body flat on the raised medical bed with her butt sticking out. She felt nervous and **** as Dan fetched some lubricant from the medical supplies. Her cock was bouncing softly as she twitched with anticipation and arousal. This was a new and alien experience for her and her heart was pounding as Dan approached.

He reached around her slightly spread legs and grabbed her cock. He gave it a few firm strokes. "Glad to see you are still enjoying yourself" he said, letting it go. He took his hand away "This will feel a little cold" he told her as he began to apply lube to her exposed anus. Without warning he dipped the tip of his finger into her and her body jolted from the surprise. He held on until she calmed down before working it in and out just a little as he waited for her tension to pass. As he felt her body get used to the stimulation he pushed a little deeper. After a little while he had his whole finger working in and out of her. He reached around to stroke her cock some more and asked softly "Are you okay? Does it hurt?"

Sarah shook her head that was resting on her arms face down "No, it just feels strange."

"I'm going to be a little more forceful then." He began to work his finger in and out of her with a more insistent motion. He turned his hand so he could apply pressure to a certain part inside her and Sarah responded by making her first noise of pleasure. "You like that?"

"It's like, ah, nothing I've felt before but, ah, it feels good.

Dan didn't say anything but he started to add his second finger. She was clearly beginning to relax and there was less resistance. Still, he was patient and didn't rush and soon he was working two fingers inside her. With two in he began to move them around more applying subtle pressure to her anus to get it used to spreading while making sure to stimulate her prostate. He thanked some of the very frank conversations he had had with some of the transexual patients he had been involved with treating.

"I'm going to put it in now" said Dan as he applied a generous amount of lube to his cock and some fresh lube to her. "I'll go easy on you." He grabbed her hip with one hand and with the other he slowly pressed the head of his cock against her anus and pushed it in so the tip was only half in. He felt her tense and pulled back a bit before trying again. Like this he worked his way into her bit by bit until he felt he was past the point of resistance and he slid in half his length causing Sarah to cry out and he felt her twitch as she orgasmed on his cock. "I take it you like my cock inside you then?"

"It took Sarah a moment to reply as she came back to her senses. "I was already so close and then I couldn't stop thinking about how you are taking my anal virginity while Tom is only over there. When you slid in and it was official it tipped me over."

"You okay to continue?" asked Dan. It was a surprisingly tender thing to say from him.

"Uh huh" confirmed Sarah "You only just got it in. It would be a shame to stop. Ah!" She cried out as Dan began to thrust into her again. She was moaning in such a feminine way. She had got used to the noises she made when thrusting her cock in someone but now she sounded like she used to.

Dan kept his pace steady and his thrusts got gradually deeper but he was holding back in case he hut her. He had wanted a night with this beautiful woman. He might have **** her but in the fantasy he had played out in his mind he always wanted her to be into it and it looked like that fantasy was coming true.

"Are you all in yet?" asked Sarah.

"No," grunted Dan.

"Try, I think I can take it."

Dan grinned at his own good fortune and in a long slow push he slid his whole length into her until his pelvis was pressed against her soft behind. Sarah took in a gasp of air as she felt all he had to give filling her up. It was intense and a little uncomfortable but exciting to know she had taken him all inside. "Go slow but give it all to me" Sarah instructed and Dan gladly obliged.

As they went on his pace quickened and soon he was truly fucking her in the ass. Sarah cried out with the weird invasive pleasure of it and after what seemed like twenty minutes of solid fucking Dan declared he was going to cum and filled her back door with his spunk.

Sarah hadn't cum a second time but the sensation had been so unique and the feeling of getting fucked by a man again so satisfying that she didn't miss it and while she was tire she was still extremely aroused. Dan sent her to get cleaned up in a shower just off the lab and he monitored Tom. When she got back they swapped over. Sarah was now hanging around the lab in just a lab coat and it felt deliciously naughty.

Dan came back in as she was examining some readouts and walked up behind her. He swept her hair to one side and kissed her neck. She tilted her head to allow him access. She was entirely comfortable being touched by him now and there was something in having been mounted by him that made her feel even a little comforted by it. She spun around and faced him "All the readouts are normal" she said as he slipped his hands under the coat to wrap them around her waist.

"I knew they would be. This procedure is actually remarkably safe."He bent down and kissed her and she tilted her head up to return it.

It suddenly struck Sarah that he had formerly been closer to her height and stooping wouldn't make him that much shorter plus there was his attractive physique and he just happened to have a big cock when she was well above average herself. "Dan?" she asked "Have you been using the machine on yourself?"