And despite Mark’s entire argument, I was still uncomfortable with agreeing to sex so easily. I was still worried about his good opinion about me. A...decision had to be made, of course, and fast. Mark blinked, looked away, and was about to get up. ‘Allright,’ I said, and his eyes were fixed on mine again. I already regretted it, but I was going to diplomatically imply I wanted to have sex with Marc. I took a few moments to choose my words carefully, then said: ‘Lets say a girl would want to give. I finished cleaning my house, but did not have enough time to cook, so I decided to order a pizza after I had relaxed, the doorbell rang, I looked through the photocell, it was the pizza man, a new one this time, that I had never seen before, some real huge black guy, not so old, but real huge, may be in his forties or so, not bad looking as well.It was only then that I realized how much of a slut I was, a cock loving whore in fact, simply because, while pausing, looking at him through the. They moved down the bank and onto our little beach. The two set down their own packs and started to disrobe. I looked away toward Julie."Should we avert our eyes or something?" I said."They invited themselves to swim with us. I'm going to look," Julie said smiling.She had a point. They didn't seem interested in hiding so I wasn't going to be shy about watching.After taking off his shoes, he proceeded to quickly remove his shirt and shorts. He did not seem inhibited and took off both his shorts. Jack moved to between the bench and the window. Bill’s head was hanging over the end of the bench and Jack pushed it down and put his big cock into Bill’s waiting mouth. Bill struggled to accommodate the huge cock as Jack pushed it deeper and deeper into his over stretched mouth. Jerry went on about how huge Jack’s cock was and kept ordering Bill to swallow that big dick. Jack and Jerry could both see Jack’s huge cock outlined in Bill’s stretched throat as Jack moved his cock in and out, deeper.