I had been posting up and down on my son Robert's awe-inspiring hard-on for 20 minutes while my father Tom, my mother Fiona and my sister Karen grouped themselves around us as mom and dad watched their grandson fucking their son and my sister watched her nephew fucking her brother. The fact they were such an appreciative audience spurred my son and I on to give the best performance we could and our grunts and groans grew louder as Robert pressed himself deeper into me with all the strength he could muster.
"Oh boy, mom and dad," Karen said, "will you get a look at that?"
My mother and father didn't need to be told to watch, their eyes were on stalks as they ogled every second of the incestuous penetration. Dad as usual was masturbating again while Fiona and Karen were busy fingering their cunts.
Eventually I lifted myself off Robert's dick and resumed standing with my thick rod still as hard as iron as I pointed it in the direction of mom, dad and Karen. I had enjoyed every moment being fucked by my own loving son, knowing it was his dick that was giving me so much pleasure, as Robert lay back, looking exhausted after giving his father such a great fucking and my pride in him swelled to even greater heights.
But my mother was having none of that. "Come on Robert," she said to her grandson, "you're young and there's life in that dick of yours yet. Now its my turn."
My son wasn't going to deny his grandmother her pleasure even though I could tell he was tired now. I began masturbating next to my father, who was still wanking as if masturbation was going out of fashion, as we watched mom holding her grandson's thick pole in an upright position as she lowered herself towards it. She let out a cry of happiness as she impaled herself onto Robert and he began to fuck his grandmother's cunt with all the dexterity he had shown when he had fucked his father's ass, my hole still pleasantly sore from the welcome invasion. Karen had moved across to kneel before the altars of mine and my father's dicks and was taking it in turns licking our balls before blowjobbing us, something she was particularly skilled in.
"Fucking hell, son," my father said whose eyes were darting back and forth from watching his wife getting fucked by his grandson to looking down where his daughter was hungrily alternating her mouth between her father's thick rod and her brother's, "this is our best party yet."
Indeed it was, our exhibitionism knew no bounds with everybody involved in the action and nobody left on the sidelines. And we had been going for more than six hours too with no apparant sign of stopping.
"That was great watching you getting fucked by Robert, Ian," Karen said, "but there's another father here who also needs to get fucked by his son."
"Yes," said Fiona from across the room, "and there's a young man here who also needs to fuck his aunt."
My mother climbed off my son's rod and signalled with her eyes for her daughter to replace her. My sister smiled her thanks and almost at once impaled her cunt on my son's pole while my father bent over in front of me and smiled across his shoulder.
"Don't keep me waiting, son," Tom said.
"I need to lubricate your hole first, dad," I said as I watched my son now fucking my sister.
"Don't let me stop you then," replied dad as he spread his cheeks to receive my tongue as Robert began his third fuck in a row while Fiona lay back on the bed and began to play with her pussy, once again a beautiful watcher and quite happy to be so.
After my saliva had provided dad's hole with enough lubrication, I stood and peeled back my foreskin and then tentatively placed my knobhead, smeared with pre-cum, at the entrance to dad's asshole. As the tip made contact with his tight rosebud, dad let out a loud shout that would have woken the dead as I then began to up the tempo until I was fully inside. I paused for a second or two to acclimatise both dad and myself while, a few yards away, Karen was now posting up and down on Robert's column while mom continued to finger her cunt while she watched.
2.
Now I was fucking my father's ass after mine had recently been fucked by my son who was now fucking my sister. I could feel my butt cheeks clenching and unclenching with every thrust of my perenially hard prick, determined to give Tom as much pleasure as Robert had given me as I rocked back and forth on my strong muscular legs. Fiona left her place on the bed and quickly went to her back on the floor beneath her husband and son to look up and get a better view of the hardcore fucking from underneath.
"I need to get a closer look at this," my mother said, every two or three seconds raising her head to lick my balls which would soon be unleashing a reservoir of my rich incestuous cream. How I and everyone else hadn't cum after the longest party in the history of our family sex club and all as a celebration for my son getting into medical school, I can't imagine. Next time we have such a marathon get-together, its highly probable we shall shoot two or three times; if future parties are going to go on this long, there should be plenty of time between each of our orgasms for us men to replenish our stock.
My balls were now positively aching which mom's divine tongue was helping to relieve with her expert licking as dad pushed back to take every inch of the prick he and mom had created in one night of passion 43 years ago.
"You're doing another great job, son," my father said, "keep it up!"
From her vantage point below, Fiona had a totally unobstructed view of her son's ass crack as my balls slapped the walls of dad's ass every time I pushed in and out. Across the room, I noticed that Robert and Karen had changed position and Karen was now leaning over the bed taking her nephew's prick up her cunt doggy-style. From appearing somewhat knackered five minutes earlier, Robert had now burst back into life and from where he was standing with his back to me, I had a perfect view of my son's smooth naked ass cheeks and his long sexy crack as his buttocks clenched and unclenched, as mine were doing, as he continued his onslaught into his aunt's nether regions.
"Oh this is so fucking hot," my mother said from her position underneath the legs of her husband and son and delighted to have her family fucking like mad around her. "You must all be close to cumming now."
"Don't worry, mom," I said, inbetween grunts, "you're next, I've never let you down yet, have I?"
"Here, son," my father said, hauling himself into a standing position as my dick escaped from his hole with a resounding plop, "time to fuck your mom now, you know she likes to cum with your cock inside her."
With remarkable agilty, Fiona scrambled into position above me as I moved to my back with my dick pointing north as mom slowly impaled herself upon me. Everything that had taken place in the preceding hours had been building up to this moment as I once again enjoyed the thrill and privelege of fucking my mother.
"That's it, mom," my sister called from across the room where she was still being ploughed by her nephew and looking over her shoulder, "we all know how well Ian's big dick fits into that juicy pussy of yours."
