I did get the expected call from Carina the next day, and I went to her place Friday evening. At dinner, during which she flirtatiously teased me almost constantly, she mentioned that her staff needs to keep in practice regularly with the strap-on dildos, and if she has to, she'll call monthly staff meetings during which everyone takes a turn at administering to each of the staff. She suggested, however, that if I would sign up at least once a month for the Open House session and its variants, I'd get that session at no charge, and she'd have me spend a night with her in addition.

I readily agreed and told her I would set up a session midweek. She flirted and teased some more and took me back to her house. The teasing and flirting didn't stop then, and in a matter of minutes we were both undressed, on the bed, with my mouth fervently attending her pussy. Two climaxes later I entered her welcoming womanhood. I pumped and probed, and my first ejaculation of the night pulsed into the warm mystical place between her hips.

We talked for a while, touching and stroking one another all the while, and when I developed a boner I slid inside her again. I pumped her pussy in several positions over a considerable while. When Carina determined that I would not last a lot longer before squirting, she maneuvered so that I was on my back, still inside her, and we kept still until the feeling subsided. She told me to just lie back and enjoy what was coming, and moved her well-trained hips so that her pussy was - well, it was as if her pussy was giving me a blowjob. Slurpy sounds accompanied the thrusting of her hips, and her inner muscles demonstrated an exquisite, breathtaking skill. I almost could not believe what I was seeing and feeling. I threw my head back and exclaimed loudly as I let my exquisite ejaculatin take over with uncontrolled spurting. This orgasm was like lightning striking repetitively in the same place.

Carina smiled broadly, with me still inside her, when I had calmed down, and asked "How did you like that?"

"Ohhhhhhh..." was all I could say at the time.

"I thought you might like it. It'll be fun to train Crystal to do that."

The following Wednesday I went to the clinic for the promised Open House session. Nurse Becky led me into the room that was equipped with a bed in addition to an examination table. While the enemas were working in me, she placed some thick foam pillows on the bed and put some large towels over them. As I showered after the enemas she arranged the strap-on, the lubricants, disposable gloves, and straps and paddles where they'd be within easy reach of those who would drop in during Open House.

With me draped over the thick pillows, Becky gave me ten hard swats with a Spencer paddle and then generously lubed me back there. She inserted the probe into my tail end, and with firm hands grasping my hips, fucked me powerfully. One thing about Becky that I could feel about her hands - the way she gripped me, I knew without a doubt that her probe was going to go in as far, as fast, or as deep as she wanted it to go in. If Becky wanted it to happen, it was going to happen.

Since the door to the room was left open during this kind of session, with an "Open House" sign on it (except for the enemas and the very last part of the session), other nurses frequently came in to watch and chat while I was being spanked or used with the strap-on. After Becky, Lynn came in and used a doubled-up leather belt to strap me, and then, in front on Crystal and Anarosa, took me for a good ride. Anarosa used a longish tawse on me, snapped on a disposable glove, profusely lubricated me, and fucked me long and hard. Crystal gave me ten hard smacks with a Spencer paddle, then tenderly fucked me for several minutes. Carina dropped in and, after a scathing leathering with the tawse, gave me quite a boner with her strap-on usage. She stayed around and watched when Rachel, close to the end of the session's time, put the paddle to my butt - hard.

Rachel lubed me up and inserted the strap-on. After a few thrusts she stopped and said, "I want YOU to do the work now, Rick. Move that butt back and forth and I'll keep still. Come on, move it!"

On my hands and knees on the bed, I pumped my hips back and forth into Rachel's strap-on. She placed her hands on her hips for stability.

"Faster, Rick! Show me that you want it. If I don't see that ass moving nice and sexy for the strap-on, I'll make it move real good with the paddle!"

Going faster, I thrust my hips so that I smacked up against Rachel, back and forth. I must have looked like I was really into it, since Rachel made sounds of approval. "Yes, like that - keep it up, Rick, this is great."

I punctuated each back thrust with an 'uh!' sound as the session went on. When she was satisfied, she let me stop. She pulled out and Carina complimented her and left the room.

Rachel locked the door and told me to lie face up on the bed. She stripped completely and straddled my mouth. Her pussy was sloppily wet with her juices and she rode me for two climaxes. She draped herself on top of me and inserted my boner in her pussy. "I've been wanting to do this ever since the weekend that we had together," she sensuously whispered while her hips rhythmically pumped and hungrily caressed me. She planted her lips on mine for a long passionate kiss until my ejaculation exploded inside her and I thrashed about.

We showered together and I feasted my eyes on her pale naked body and wide smile. She was delighted that I developed another erection for her as I was getting dressed.

On my way out of the clinic, Crystal signed me up for the newly designed session that she told me about earlier. I signed up for one week out to give my well-paddled and strapped bottom time to recover. She also made plans to spend part of the weekend with me, and said she had to call me later that day with some interesting information. When Crystal did call, she told me that Carina had offered her the day off from work tomorrow if she'd spend the night with her that night, mentioning that she'd probably need the day off. That was most interesting, and I couldn't wait for her to come over on Saturday afternoon to fill me in.

"I won't spank you this weekend - you still need time to recover before your session next week," Crystal related when we got together. "It was a very interesting night with Carina. Maybe I shouldn't tell you about it, but instead show you. No, I'll tell you. We went out to dinner, like before, and we talked for a little bit when we got back to her place. Anyway, she took me into the bedroom and we got undressed and she hooked up a strap-on. We kissed for a while and then she fucked me all kinds of ways with her strap-on - easy, hard, on top of me, from behind, all that. I was so hot I came several times. Carina laid on her back and wanted me to get on top of her.

"She put her hands behind her head and told me to follow her instructions. I sunk the strap-on inside my pussy and she said to imagine that my pussy is my mouth, and to sensuously suck on her strap-on - as if giving a BJ. After a long while I finally caught on and got the hang of it. Carina seemed to get so much pleasure from it that I came Anyway, she stuck her finger inside me and had me work on it that way. Gosh that felt good. Anyway, then I put on the strap-on and pleasured her with it several times. In the shower the next morning we had some fun with getting all slippery with the soap - I guess we spent a half hour in there. Anyway I was kind of sleepy from being up half the night so I went home and napped."

Crystal demonstrated her new skills on me. It was breathtakingly erotic and of course she extracted plentiful ejaculations from me.