Whilst I was a student at uni in Leeds, my girlfriend over in Manchester (Karen) shared a flat with her flatmate suzi. My story started out as accidental flashing and turned in to a horny threesome. As a student I had a lot of time on my hands and frequently made the journey back to see Karen in Manchester. I would often stay over, and fuck her brains out, with her flatmate suzi, in just the next room. Over the course of time, I got more and more relaxed around suzi, and would often walk around the flat in just my boxers or a towel. On Saturday morning, feeling hung-over and half asleep. I got out of Karen’s bed, put my boxers on and walked outside the bathroom, on the landing was suzi, in her sexy little nighty just covering her bum. Then I noticed my dick was hanging out of my boxers, suzi coughed and I clicked what had happened and apologies. She said not to worry. I didn’t feel embarrassed, more turned on that anything, having just shown my cock to suzi, I went back to the bedroom, and fucked Karen coming all over her tits. As the weeks went on I continued to walk around the flat in just my boxers. with nothing more said. Then one evening naked in bed, I had just been licking Karen’s shaven pussy, when I realised the condoms we has bought were on the kitchen table. I ran out completely naked with a semi hard cock to the kitchen, when suzi appeared, there was no hiding what had hampered. She wasn’t bothered just laughed it off, then Karen appeared in the hall, both of them staring at my naked body. Suzi remarked "we've seen it all now Chris, you may as well walk around the flat naked" so from then on I did every morning I stayed there, I would wait in bed with Karen until suzi was out of the shower, then walk in the living room completely naked, most of the time with a hard on too. Karen didn’t seam to mind, I had a big dick, so suzi could see what she was missing. Suzi would be dressed in a business suit ready for work, as I would make breakfast for the both of them, naked. Then one evening was a red hot day and the girls weren’t wearing much it turned out to me much more than flashing. We had all been out on the piss for an all day session down the local after the football, it was a red hot day and the girls weren’t wearing much, around 6 we returned to the flat, all pissed, were the conversation turned to sex, and especially cock sizes. Karen and Suzi were discussing lengths and girths and then the subject turned around to me. Suzi said "How big is you cock Chris" I little taken aback by this comment I said "I don’t know 6 1/2 - 7 inches I suppose", and jokingly remarked "Why do you want to measure it?" fuelled by alcohol, Karen went and go a tape measure, and ordered me to strip off, sitting there on the sofa naked with these 2 horny pissed girls was such a turn on. I though I’d play this for all it was worth, I said to Karen "To get it really big, I think you could play with my cock in front of suzi" - Karen took my cock in her hand and rubbed my dick, until I was so hard. I knew both girls were as turned on as me, then feeling bolder, said that Karen should also suck it in front of suzi. she got off the sofa bent down and took all 7 inches in to her mouth. and gave me the best blow job I have ever had. Suzi's face was a picture, watching her best friend giving me head. Now very hard they measured my cock 7 inches long 2.5 inches girth. not wanting the fun to end there. I suggested that it was unfair that I was naked and the girls were fully clothed. and that they should strip too. They took some persuading, but still drunk they agreed to strip down to underwear. they both sat there in just white bra and knickers with me totally naked, I thought I’d died and gone to heaven. I could see that Karen’s knickers were starting to get wet, so I got off the sofa and started to lick her pussy through her knickers in front of suzi. Suzi looked shocked, but turned on and said "fuck it lets get naked" She unclasped her bra, and let me pull down her wet knickers and started to finger her wet shaven pussy. I pulled Karen’s knickers to the side and stuck 3 fingers up wet wet fanny, making her moan. Suzi came over to me and took my cock in her hands, I couldn’t believe I was going to fuck my girlfriends best mate. Karen stripped off and I finger both there pussys at the same time. my cock was nearly exploding. When both girls were really wet, I bent suzi over and rammed my cock up her pussy, fucking her doggy style. As Karen fingered her clit in front of me. We swapped and fucked in many positions all night, ending up with the girls covered in cum and me exhausted. The two girls continued to share a flat and me for another 6 months, and there was many more horny nights.