As I said before, Master is not short of a few bob, his house is isolated, large and also well equipped with a large playroom upstairs in one of the larger bedrooms. Still blindfolded but with arms released from my neck, I was helped up the stairs to the playroom, my knees were killing me and to be honest it felt good to be moving again. As soon as we entered the room, I was manoeuvred into position. In the centre of the playroom is a sling type contraption made of scaffold poles, there is a sling type piece of leather in the centre with sort of steps (also made of leather) at either end to allow the top to either kneel or stand as he is enjoying the slingee. "Get in there slave" someone said. This was the first time in my life that anyone has ever called me slave, and it came as sort of a shock to realise that, at this moment, that is exactly what I am, I was just there to do these mens bidding. "Yes Master" I was equally suprised to here myself answering. Unusually (as I have been in the sling a few times) I was placed face down. The restraints on my arms and legs were attached to the frame work and the restraint on my waist was clipped to the chains which supported the back of the sling. Still blindfolded, I expected to feel a cock being pushed into my bum, instead, came the cold feeling of a latex dildo being pushed past the point of resistance, it was quite large and hurt a little but was manageable. What came next was a total suprise. At the same time as I felt the dildo being forced in to me more, I heard the distinctive sound of an electric motor....They had set up a fucking machine behind me and someone other than me was controlling the speed. Slowly the speed increased until it just got too much for me as I let out a scream of pain?/pleasure? The speed was decreased to a slow rythmic push pull motion while someone place a ball gag into my mouth. Immediately the speed was increased and slowed as I can only guess that each of the blokes took a turn on the controller. I was bitting hard on the gag, screaming almost constantly, but in the haze of pain/pleasure I could feel cum spurting from my cock through the bars of the cockring. My head was in a spin. After what felt like hours, but was probably only 10 minutes or so, Just as suddenly as it had started the machine was switched off and the dildo pulled out. The dildo was straight away replace with a thick hard cock, no messing, it was just plunged balls deep into my gapping ass. If i screamed during the dildo, that was nothing to the shock of this pounding, whether it was the added feeling of hips slamming onto my cheeks or the feeling of balls slapping against mine, the intensity of this fuck was like nothing I had experienced before. This was pure animalistic pleasure on his part, how I felt meant nothing to the man behind me who was fucking me for all he was worth, the strange thing was that behind the screams, I was thinking "ok, go for it, I'm yours to do what you want". The ball gag was pulled out and replaced by the big cocked guy. He began to use the motion of the sling to fuck my mouth deep as I rocked foreward and backwards. Saliva was pouring from my mouth and nose, falling to the floor cocks in both holes were replaced by others at regular intervals as each of the eight men edged themselves to the verge cumming before pulling out and resting. This continued and continued sometimes the fucking was slow shallow and gentle, sometimes deep fast and hard. Sometimes my mouth was just ravaged as a dick was pushed hard into the back of my throat, sometimes just the head being offered for my tounge to lick, a ball sack placed into my mouth. Every so often, I felt the neck of a small bottle being offered to my nose, one long snort and that gorgeous warmth flooded my body as the world began to spin slightly, this took some of the pain away and left me with that heady feeling of pleasure which I can never really describe fully. I don't know how many times the guys changed places but it felt like a lot, gradually the face fucking slowed down as each concentrated on my rear end, I started to realise that a few at least were close to cumming, part of me was thinking "Thank god, it will be over soon" while the dark side of me thought "No, don't stop, just fuck me hard". No one had cum as far as I know, and I was relieved/dissapointed as the last cock pulled out, not to be replaced. My body must have realised that this onslaught was over a s a wave of relaxation washed over my body almost to the point where I felt as though I may faint. This did not last long, as the restraints were unfastened and I was turned onto my back in the sling, this time only my arms were fastend back to my neck collar. I don't know what they are called, but a wire contraption was forced into my mouth making it open wide, the blind fold was removed and for the first time since this began I saw all the men naked standing around me wanking furiously. The heightened sense of arousal allowed a quick lookI was suprised to match the cocks to the bodies, The largest cock belonged to the smallest of all the men at about 5'7" he was endowed with probably seven or eight inches and a circumference around 4 or 5 inches, while the tallest most muscular chap had the long thin member around nine inches but quite slim, this was the one that had gone deepest down my throat. I was quite impressed with myself for that. Suddenly the first spurt of cum shot into my mouth and onto my face as I lay back in the sling, followed by the next and the next. When your mouths forced open by whatever its called, it's very difficult to swallow, and my mouth was quickly filling with cum, nothing new there as I,ve done this many times when dogging, and the mixture of tastes, some salty some sweet began to accumulate as i breathed through my nose, trying not to gag or throw up. Eight loads of cum feels like a massive amount when it's in your mouth and on your face. Eventually I was allowed to sit up still with an open mouth full, cum spilled out from the sides as the contraption was removed and I was ordered to swallow. I managed a garbled "yes sir" as i closed my mouth and tried to swallow. I honestly thought I wa going to throw up as it all slid down, I gagged hard and was tempted to spit but for some reason the slutty "slave" in me decided that, that was just not an option. As I opened my mouth to prove all the cum had gone from my tounge, I got a rally of "well done Slut/Slave/Bitch/Whore " from the guys. We began to leave the playroom and I headed toward the on suite to wash my face, as master grabbed my arm and said "leave it to dry, come downstairs". For the first time that night since the guys had arrived someone made me a G&T. and we sat down in the living room to chat and watch some more tranny porn. I got to look at the clock on the wall, it was just before 1.30 am, we had been playing for over 3 hours non-stop.