This happened back in the mid 60's. I was just shy of 21 yrs and had married a girl from New Zealand and needed a medical clearance before I could leave the country. I had spent the previous five and half years in the Merchant Navy and had had plenty of experience with both sexes. For some reason I had to visit a GP in another village . I managed to get an appointment at 5.45 of an evening. When I turned up I was told he was running slightly late and would I mind waiting. At 6 pm the receptionist left for the night and I sat and waited. At about 6.15pm the doctor ( he was about 50 yrs of age ) came out and ushered me into his room, which turned out to be part of his house. It was dark by then and quite cold out and he had an open fire burning. The only light in the room was a desktop light and the light from the flames of the fire. He started to ask me questions and filling in the required forms. After a couple of minutes I started to feel very relaxed and was enjoying the ambience that was prevailing, very mellow. After asking questions he said, I need you to strip off as I need to give you a thorough physical . I removed my clothes and left just my under pants to which he said they need to come off as well. I thought strange, but did as instructed. He started at my ears and then my mouth and gradually worked downwards. The ambience of the room and his hands touching me started to get me aroused and I started to feel my best friend getting excited. He was tapping my chest and back whilst listening through the stethoscope. He then asked me to open my legs and cough. He looked at my semi-erect cock as I coughed and shook his head. By this time I was three quarters erect, he came and stood close to me and cupped my balls and said, cough please. His warm hands took my erection to full mast, so to speak. He then made quite a performance of holding each testicle two or three times and again requesting me to cough. Whilst doing this he was looking me in the face, he then wrapped one hand around my cock and held my balls with the other and surprised me by saying, did you get this whilst on the boats? As I looked at him trying to figure out what the hell was going on he started to wank me whilst at the same time caressing my balls. By now he had a sort of smirk on his face and I was really starting to get used to the idea of him wanking me, no thoughts about him being a GP, just a guy pleasuring me! He then let go of me and went and sat down. He then motioned me to stand in front of him after which he started playing with my cock and balls again. Have you had many men, he asked, to which replied several. He then pulled me towards him and started to suck me off. His hands and mouth were doing wonderful things to me and I started to move my body in a fucking motion. He then started to give a soft moaning sound so I placed my hands on the sides of his head and really started to face fuck him. This went on for several minutes after which he pulled away and started to get undressed. When he dropped his trousers I got a real surprise at what he had between his legs, it wasn't that it was long it was how absolutely thick it was that surprised me, definitely the fattest cock I had ever seen. I immediately dropped to my knees and started to suck this beautiful fat cock. I had a bit of trouble stretching my mouth around it and could only get about three maybe four inches in. After a couple of minutes my jaw started to ache and I had to pull off, he was by this time breathing quite heavily and pleaded with me to make him cum, so I resorted to wanking him. At the same time I used my tongue and mouth to try and excite him. As I did this I expressed my amazement at how hard his erection was, to which he said, I've always got very hard. He then asked me did I do anal, I replied yes, but I don't think I can take that , you're too fat? He asked, could we try? He motioned me to lay on the carpet in front of the fire. He then got some vaseline and started to gently insert one finger into me. Then two until he managed to get three at which point he really started to thrust all three fingers in for several minutes. He then got on his knees and lifted my legs up and held them with one hand whilst using the other hand to insert his monster into me, trying that is! Now I should tell you I have always been exceptionally tight and this was now starting to worry me. He was pushing and prodding at my hole but it wasn't going in, so after several minutes of him trying and getting frustrated I suggested he lay on his back and let me get on top and try. I knelt over him and grabbed his erection and started to sit on it, but again I was too tight . I kept trying for several minutes till eventually the head just started to open me up. I immediately felt the pain that I always got but kept trying. As I looked down at his face I could see the pleading in his eyes and face, he was virtually saying, Please get it in! Then my outer ring relaxed slightly and about an inch or so went in. I stopped straight away because the pain was excruciating, like the worst burning sensation my ass had ever felt. His eyes opened up at the sensation he was getting from his cock, I begged him, Please don't move, let me try and get used to it! After a couple of minutes trying to get over the pain I started to move my body up and down ever so slightly and eventually I managed to get the monster completely in me. As it started to get easier I pushed up and down more until the monster started to hit the spot and then I really started to enjoy the sensation of fucking him. Although I was still hurting slightly the joy I was getting pushed the pain away and I got onto the sensation of a constant feel of orgasm that was hitting me. My cock was weeping a thin stream of what looked like water and although I had had this happen several times before with other men, definitely not like this! I guessed we fucked for about 20 minutes before he grabbed my hips and really started to thrust his cock into me before shooting his load. Afterwards we sat and talked and he asked me when I was leaving the country. I asked him why, to which he answered he had a friend who he felt I was sure to like. A week later I met him and his friend and spent several hours having a great time.