I had my cock stuffed deep in Amelia's arse and she was gently rotating her buttocks when her phone buzzed. I hardly heard it. It seemed strange that the beautiful, firm rounded arse I was fucking had been sat primly on a seat in the English Department's lecture hall barely an hour or so ago. It wasn't as though Amelia was even my girlfriend, we were rather two people willingly swept up in the Prof's and his gorgeous wife Sophie's sexual plans. I liked Amelia a lot - she was prim, proper and posh but she also had a quirky sense of humour. Next year she would graduate, no doubt taking that divine arse back home to London, no doubt marrying that dull boyfriend I once met at a University do and who had never fucked her in the arse. Amelia leaned forward to reach the phone and her movement contracted her buttocks ejecting my cock. She sat up : ' It's Sophie..' she paused for a moment. The nipples on her small breasts stood out pink against her pale skin. She looked puzzled and continued:- 'How bizarre is that?' I was frustrated by this interruption and I tried to slide my hands between Amelia's legs. I needed to get my cock back in her body - the sperm churning impatiently in my balls was agony and needed release. Amelia shrugged me off as she read the text out loud to me. 'Dear pets, come to the apartment we are going for a walk in the woods.' Amelia looked at me ' Pets? She's never called us that before.' I had managed to insert a finger in her cunt , then I slid another in churning up the juices. Amelia responded, opening up her legs and I moved my body between them. In an instant my cock was up her. Her cunt was hot and wet and as I thrust forward and back it's suction soon began to draw the cum from my balls. In a few seconds I had shot my load. With hardly a pause Amelia was on her feet and getting dressed. ' Hurry up Michael, we've an appointment with Sophie!' When we met up with Sophie she came straight to the point : ' The Prof and I think you need to get out more so we are going dogging...' We stared at each other. ' Get your clothes off. All of them and put these on' She gave us two collars, each attached to a long lead. 'From now on you are my pets.' Naked we followed Sophie to her large four wheel drive, the Prof was already in the driving seat. It was parked a long way back from the road so no one saw us get in. Half an hour later we pulled off onto a country road, then we went a little further before we stopped by an overgrown track. ' Here we are, now get out.' Sophie took our leads and led us into the trees. After a while we came upon a small clearing with a picnic bench. 'Amelia - get up on the table and spread your legs.' Amelia obeyed. The Prof disappeared down another path , to appear a few minutes later with several men. They were of all ages and types, they had obviously been waiting. The Prof brought the first one forward. An old guy who delighted in running his hands all over Amelia's naked body. With some difficulty he inserted his cock in Amelia's cunt and started to fuck her. Suddenly Sophie pulled my lead and told me to follow her. We went deeper into the undergrowth.. Walking along the woodland path totally naked was an unusual experience, being barefoot made me feel particularly vulnerable; although my cock had shrunk during the journey it was now growing harder with each step. By the time I reached the clearing it was standing stiff in front of my stomach, the cool breeze did little to cool its pulsating head. In the clearing there were two cars and a van parked separately from each other. I hesitated for a moment until Sophie tugged my lead and drew me forward towards the nearest vehicle. It was a very old van with rust around the edges and a broken rear light. As we neared it, the rear double doors clicked slightly open. I went closer, even though I was nervous my cock was throbbing into a massive erection. The door was pushed further open , Sophie dropped the lead and I climbed in. The interior was dimly lit with a yellowish light and laying on an old mattress was a woman of immense size. Two huge sagging tits drooped down upon her stomach, the flesh on the tops of her legs met and almost covered the tufts of hair on her cunt. She smiled as she opened her legs wide and a gruff voice from behind her beckoned me in. It was her husband. 'Go on feel her cunt.' I reached forward and felt her gaping hole. It was steaming hot and oozing cunt juice. I put a finger in, then a couple more. She was murmuring as I eased my whole hand in and out as far as the knuckles. I caught a glimpse of her husband's arm moving as he wanked himself watching me explore his wife's dripping hole. 'Go on fuck her.' With difficulty I eased myself between her huge legs, stuck my cock in up to the hilt and started to fuck her as hard as I could. In out. In out. I felt the van shake as she bucked her massive hips in time. I was almost thrown off that quivering mountain of flesh, but grabbing a tit in each hand I managed to steady myself and regain the rhythm. She started to tremble and came with a huge grunt as the downward pressure of her cunt sucked the cum out of me. At that moment her husband furiously wanking, leaned forward and thrust his cock towards me. I took it in my mouth just in time to catch a huge load of hot sperm. God he came a lot, I couldn't swallow it all and some dribbled out of my mouth onto his wife below. It was then Sophie grabbed the end of the lead and yanked me back. ' Good boy Michael - onto the next.' The next car was a family hatchback. The rear seat was down and inside a youngish couple were laying side by side. He had his medium sized cock out and she had her mini skirt pulled up to her waste revealing a neat shaven pussy. I quickly got to work starting with the woman. She must have been in her early thirties, with a pretty face and average tits which pushed up against her jumper. She gave out a short 'Oooh' as my tongue first glided along her crack. I started her off with long licks from arse hole to the top of her slit. She was soon panting heavily and sighed when I left her to give her a husband his first share. To begin with I carefully licked and teased the head of his cock before taking it into my mouth for a deep sucking. He was soon arching his back ready to cum, but I withdrew my mouth, and after briefly tickling his balls I went back to his wife. She was ready to cum and in the final moments of intense clit licking she sobbed and hunched her back forward before shuddering to a tearful climax. I quickly switched to the husband taking his cock so deep it was in my throat. Then I withdrew my mouth to the knob head, twirled my tongue around it and wanked his shaft vigorously with my hand. Sensing he was about to cum I gently squeezed his balls. He shook as his cum exploded in my mouth. Another heavy load, but I managed to swallow it all this time. I needed to cum myself but as I grabbed my cock intent on fucking the wife Sophie pulled the lead, jerking me back. ' Not yet Michael, there's one more to go.' The last car was a neat Mercedes' sport. It had tinted windows, one of which slid down as we approached. A cultured female voice spoke ;- 'Stick it through, I want you to cum in my mouth.' I could see a pretty face with dark eyes and black tied back hair; she obviously didn't want it splattered by any stray cum. The aroma of Chanel Number 5 wafted up from the interior. I leaned forward, there was a bit of shuffling in the car then a pair of warm lips enclosed the head of my cock. The lips moved slowly up and down my shaft pausing now and then to allow the rim of my knob head to be licked. I felt the sperm churning in my balls as the mouth bobbed up and down. Then I shot one of the biggest loads of my life, certainly the mouth couldn't contain it all and I heard the woman say ' Careful, it's dripping onto me.' I looked down and into the face of a man, the man who had just sucked me off; and in his lap watching the action was the woman who had spoken to me. I could just see her panties around her ankles and the smell of a fingered pussy started to drift up. 'Whatever turns you on' I thought as I withdrew my sagging cock .