Then Sylvia said, “Greg, we have a special request that you can help us with or not, it’s up to you.” “I’m listening.” I replied. Sylvia... continued, “We want you to watch Tim fuck me, then we want you to fuck his ass while he is fucking me.” Wow, I thought. I had fucked a girl in the ass once, but never a guy. “Lets do it.” was my response. As we got into the bedroom. Tim blushed and said, “I have another request. I want you to spank me while I’m fucking Sylvia.” Hmmm….another first for me. . We need you for our experiments." Whaaaa!"At that moment I smacked him behind the ear with a piece of plastic garden hose filled with lead shot, he went down like a bag of shit. Next move after shutting things down was to drag him over to the porch and lay him on his back with his head hanging over the edge. A fumble around and I found my length of tubing and funnel. Something I had done many times as a paramedic, I slipped it down his throat. Now for the main ingredient, I had previously. She's sucking him so hard now. Billy begins grunting, and her moans deepen as he starts to dump his seed into her throat It is then I clear my throat loudly. Her eyes fly open and her mouth comes off his spurting cock, spraying cum in her face and hair, down her neck. Meanwhile, while his cock is hosing cum all over the place, Billy is trying to get to his feet, but having a tough time finding his balance, the orgasm is so overpowering. It is so difficult not to smile at the comical sight. . He keeps on jerking me and I get a full boner and I can’t help thrusting my hips forward and back. I am breathing heavily by now and he is skinning my foreskin back and forth and cum starts to spurt out of my cock. He keeps this up until no more dribbles out and my pecker diminishes.“Did you like that he asks”.“Yes” I reply.“Can this be our little secret, you won’t tell anybody?“No I won’t” I reply.Then he leans back and his other hand emerges from the toilet hole sporting a big hard on. I.