The next time I saw Amelia she was in the university refectory drinking coffee, the artificial light highlighting her blond hair. She looked reproachfully at me as I sat down next to her. She had a cute but serious face: ' I couldn't walk for two days after the arse fucking you gave me the other night....' I looked around, embarrassed someone might have heard her. Then she smiled.... ' you must do it again sometime.' I thought yes I would like that, particularly if Sophie participated again. I felt a tremor between my legs as I remembered how Amelia had frantically ridden my cock as it was stuffed to the hilt in her arsehole. She had been facing away from me so I had an excellent view of her small rounded buttocks as she rose and fell on my shaft. Then Sophie had joined us, gently pushing Amelia back so she lay flat on top of me, pinioned by my cock. I couldn't see but I soon felt Sophie's fingers enter Amelia's cunt, first one - then two, then all of them. Amelia began to murmur as Sophie's fingers extended inside her. Then I felt them pushing against the fleshy wall of Amelia's cunt and rubbing against the head of my cock which was still deep inside her rectum. . It was an incredible feeling and I couldn't hold back from shooting a torrent of hot cum deep inside. As Amelia shook with her own orgasm I heard Sophie's posh voice mutter ' Young people today, they have no staying power.' I returned to reality although I had gained an uncomfortable erection. We exchanged a few pleasantries and then Amelia looked at her watch: ' I must go, I have a lecture in ten...' She stood up . She was wearing tight black leggings that seemed to go on forever. ' Oh and the Prof wants to see us this afternoon after four in his office.' later when we met the Prof he didn't beat about the bush. He had an old friend visiting the university and he would want some sex. 'Were we interested?' . His friend Jon, was quite famous and very wealthy. He would certainly help to reduce our students' debts. But he was very nervous, so we would need to put on a show to get him excited. I looked at Amelia and she looked at the Prof, without asking my opinion she replied 'Yes.' The Prof wasn't exaggerating as Jon was very nervous. He didn't say much as he invited us into his hotel room and showed us to the huge king sized bed. While he sat himself down in an easy chair I started to strip, pausing to glance at Amelia's exquisite body as she stood naked before me. Bobbed blond hair, tiny breasts , long legs, shaven pussy if that didn't get Jon going nothing would. In a moment she was sucking my cock, with one hand grasped around my shaft and the other gently tickling my balls. The way she concentrated her tongue on the rim of my knob head soon stirred the cum in my balls. I didn't want to cum too quickly so I tried to back away but Amelia grabbed my arse and kept me fixed on her sucking mouth. Eventually she released me and I regained my composure by kneeling between her legs and going to work on her cunt. I started with long licks from her arsehole to her clit, progressed to the lips on either side of her hole and then the just the clit itself. Her cunt was steaming hot and Amelia was panting and gasping with each lick. Out of the corner of my eye I saw Jon was stripping, there was no way he could just sit there while we were in action. It was time to fuck but as I parted Amelia's legs and gently eased myself between them, Jon pulled me back. It was then that I saw it - his cock wasn't just big, it was huge. Mine is big, but his was even bigger. I'm sure I heard Amelia gasp when she saw it. I made room for Jon as Amelia parted her cunt lips and seemed to brace herself ready to receive that huge weapon, but Jon had other ideas as he pointed his cock towards my lips. I opened wide and its huge head filled my mouth. It was difficult to suck, but Amelia helped by wanking the shaft with both her hands. Soon Jon started to shake and his cock trembled before he shot a massive load down my throat. I swallowed as best I could but he kept cumming and sperm oozed out of my mouth , dribbling down onto Amelia's hands which were still pumping as fast as she could. Jon withdrew panting and slipped back onto the chair. For a moment Amelia and I gazed at each other - that was some cock. I was horny as hell and so was Amelia so I quickly mounted her and fucked her hard. She loved it and climaxed quickly but I kept going and revived her with a steady pounding. Then Jon was back. I hadn't expected him to want more so soon but his enormous hard on indicated otherwise. I thought Amelia would split when he entered her, but she took it all with a long ahhhh sound. He fucked her every way possible but still didn't cum , eventually he withdrew and beckoned me over - ' On all fours Michael.' I did as he asked and I felt a certain amount of fear mixed in with excitement as I waited before him. I turned round for a quick glance to see a huge pillar of rock hard flesh. The knob head seemed like a fist and the shaft like an arm. I felt the tiny hairs on the back of my neck raise and I had an empty feeling in the pit of my stomach. Slowly the knob head was eased up my rectum, It was huge and my head slumped forward as the cock seemed to push all the air out of me. I was being impaled by a monster cock. I began to pant as the rest slid up. It was still for a second and then slowly withdrew with a slurping sound, and then it was back and we were off on a ferocious cock ride. With each quickening thrust I was pushed forward and I had to grip the bed as best I could to stop myself being pushed off. I didn't know whether I could take much more of this, but I did. In front of me Amelia lay watching with her legs open and her fingers rubbing her cunt. Suddenly I felt his massive cock jerk, and it almost lifted me up with it. Jon was pulling it out. I collapsed on the bed as I heard him say : 'Amelia - on all fours.'