As his friends watched on I got down on my hands and knees before Roy. He had always fucked me on my back before but I thought that this would give the best show for the others in the room. I could feel his cock slid down my ass crack until the head came to rest on my asshole. I slowly pushed back onto his cock until I felt the head enter me. I was surprised at how much longer his cock felt as he sank into me from behind and slowly started fucking me. Once buried up my ass Roy grabbed my hips and started slowly to fuck my ass for his friends. My own cock felt like an iron bar swinging with Roy's pounding into me. My ass began to heat up with the friction of his cock and I slammed back into him, squeezing his cock with my ass to make him cum. Soon he buried himself as deeply as he could up my ass and I could feel his cock spasm and his hot cum began to cool down my ass. After pumping into me a few more times Roy pulled his softening cock from my ass and I could feel the cum start to drip down my legs.
His small friend quickly moved to take Roy's place, kneeling behind me and driving his cock into my ass using Roy's cum as a lube. The smaller size and the big load of sperm in my ass allowed him to slide into me up to his balls easily on the first stroke. Grabbing my hips he started pounding my ass driving his 5" cock as deep into me as he could. With each stroke I could feel Roy's sperm leaking from me as he tried to replace it with his own. Sliding one hand under me he started stroking my cock as he pumped into me asking how I liked it. I started telling him to fuck me, fuck my ass and fill me with his cum. As I started talking he picked up speed, calling me a slut and quickly filled my used ass with his own offering of sperm.
As his cock, along with a big load of cum, pulled from my ass the next got into position. He did not seem in as big a hurry and rubbed the head of his cock around my ass and in the sperm before slowly sinking into me. After the last cock his seemed to stretch me more making me feel the full size of his 6" cock entering me. I pushed back into him wanting his cock buried deep in my ass. He started a slow steady rhythm in my ass and kept it up for about 10 minutes. I could feel his cock thicken and stretch as his pace quickened and knew he was getting close. I started moving back into him and squeezing my ass on his cock as he pulled out. Holding his cock deep in me he blew another load in my ass. By the time he pulled his cock from me cum was rolling down my legs, cooling and thickening. My ass was beginning to feel sore by this time but all I really thought about was the size of that next cock.
He got up from his chair and stood in front of me, giving me a good view of his big cock and grabbing it in his hand rubbed the head around my lips. I opened my mouth and started sucking the head as he stroked himself. He asked if I was ready for him and I said yes, fuck me with that big cock. He got behind me and slowly started pushing his cock into my wet open ass. Even with the fucking I had taken I could feel my ass stretch around his thick meat. I lowered my head to the floor as he started pumping, with each stroke sinking more of his cock up my ass. It wasn't long before I could feel the full length of his 8" cock moving into me, opening me up even more than I already was. Once in he placed his hands on my shoulders and pulled me back onto his cock. I lifted up onto my arms to help him and started rocking my ass back into him, taking him as deep into my ass as I could. His hot hard cock seemed to radiate heat throughout my ass as he fucked me. The smaller man then lay on the floor beside me and sliding under took my cock in his mouth. As the cock in my ass pushed me forward my cock would slide deeper into his mouth and soon the three of us were rocking back and forth in unison, moaning and groaning almost in harmony. I thought that it could get no better but then Roy stepped up and offered his now hardening cock to my mouth.
Here I was having my cock sucked, a huge cock fucking my ass and Roy's familiar cock pumping my mouth. I started cumming right away. As I tightened up and shot my load I could feel my ass squeeze that big cock and It started jerking in my ass. Soon he was cumming what seemed gallons up my ass and Roy was shooting his load down my throat.
We all collapsed after that and I took some time to clean up. They stayed until 6:00 that evening, fucking my mouth and ass, sometimes alone, sometimes in teams for most of the day until they could not get hard again. Roy certainly had surprised me but I think I got the birthday present.
This was my most exciting adventure and sums up my move from straight to bi bottom. I have had other adventures, some left out and some later and if the demand is there I will put them to paper also.