“Holy fuck” I muttered under my breath when Sara appeared in her latest posing outfit.The previous outfits had been sexy with lots of bare skin bu... with the best bits covered. She had given me a hardon, and I had to continually adjust my cock within my baggy shorts to stop it being noticed.The problem was that she had caught me a few times adjusting my cock.She smiled at me every time, and that made my cock even harder.This posing outfit left nothing to the imagination. Under a transparent film. When he reached my ass he paid particular attention to the crack and his fingers moved down as far as my clit before coming back up and dwelling on my pink rosebud."Turn over please," he said.As I did so I frantically looked around for the others. Shit, three other guys were rubbing screen into them. No they had been rubbing screen into them, now they were fingering their asses and pussies. As I turned lazily, and sheepishly the other three did likewise. To my surprise the four guys changed. I wore tight cotton shorts and T and let him in.I took a break, got us 2 beers and started a chat.I asked him who he was dating, nobody.2 more beers."So, what do you do for sex"? I smiled.He told me that every now and again he jacks his cock but that's it, he hadn't done that in a month.We drained our beers and I got 2 more.So, does your cock still get hard? I asked innocently.He almost bragged that it got stiff regularly but with no wife he let it go down by itself."You've been married. Simultaneously, a specially trained therapist reached into the Tank and gently massaged Monkton's buttocks to enhance his sensitivity in his posterior regions. In later sessions, this massage treatment included electrical stimulation of his sphincter and the inner ring of his anus.Monkton was now ready for the final stage. He had to be supported under both arms as he was led forth from the Tank and strapped bent over, face forward over a waist-high padded bench. Injection of a mild stimulant.