I had only had sex a couple of times and that had been a few years ago. I began to fuck her hard and grind and she clutched me and hissed, "Yyyeeeesss...ss!"She thrashed and spasmed and I finally shoved into her and buried my cock. I gushed huge strong spurts of sperm. She twisted and struggled while her pussy seemed to grip my cock and milk it, "Mmmm!"When I finished, I relaxed on her and looked at the cave opening. She sighed and laid back, panting and rubbing my back. I gave her a kiss and. It made it difficult for me to concentrate on the work in hand and quite took away any pleasure that might have been derived from the exercise. I also found it difficult to concentrate on the adjustments I need to make to trigger the actions of her anal plug. Fortunately Aristides Poloi came to my rescue with a suggestion that allowed me to concentrate on the task in hand without Helena's constant carping.The device Poloi proposed had been developed by a Doctor Whitehead. I suspect his primary. But he gave me no warning, and ropes of salty, sticky semen shot into my mouth. I coughed most of it back up because the taste didn't really agree with me, with most of it landing on my Tigers jersey. Mike sat down on the edge of his bed trying to catch his breath while I sat back in horror at what I had just done."That was awesome!" said Mike, exhausted at what was probably the biggest cum in his life."Yeah, maybe for you," I said."Hey, why did you suck it?" he asked after what seemed like. " Her tits were much larger than I had thought."Anyone else want to come?" She giggled."Come on as Susan says when life give's you lemons get naked."2 more boys procceded to strip down.Sarah walked up to me, "Come on Bob get naked I want to see that dick."She pulled down my pants but not my boxers.She took off her shirt and pants. We were both in our underwear. I decided to take a lead. "Okay on three lets get naked. Eyes closed." 1...2...," I grabbed by boxers getting ready to show my massive.