This story relates to a fancy-dress party my fiancee and I attended in the social club at the hospital where she was a nurse. All those in fancy dress had to wear something portraying the opposite sex. My fiancee being a nurse managed to get hold of some surgical scrubs, and dressed in green loose top and elasticated trousers, white pumps and a face mask and hat, went as a surgeon. I had no idea what to wear until my fiancee thought it a good idea to dress me as a schoolgirl, as she had the right gear. So, there I was with white shirt and school tie, short dark blue pleated skirt, black hold-up stockings and suspender belt and the smallest black see-thru thong. Well, it was the one and only time in my life I had ever worn womens clothing, and vowed never to do it again looking at myself in the mirror before leaving for the party.
Once outside in the cool air, I found the feeling of having a skirt and hold-ups on very liberating. This had the effect of getting me slightly aroused, and my cock was soon pressing against the thin material of the thong. At the party I began to relax, however my fiancee had other ideas. She insisted on telling her friends I was wearing a thong, and had me turn round and lift the back of my skirt to show everyone. Having given the little exhibition, I turned frontside again and my fiancee lifted my skirt at the front. Well it was obvious to most I was mildly aroused as my cock had begun to creep upwards towards the waistband of the thong. I quickly brushed the skirt back down, muttering that it was more comfortable to lever my cock upwards in the underwear than to try and fold up into the thong. My exhibitionist tendencies had got the better of me having shown my cock to some women, and it has now reached it's full height inside the thong. My skirt bulged slightly at the front, and I had to do something about it.
I grabbed my fiancee and dragged her outside the clubhouse into a dark corner of the car park. 'Help me with this' I said to her, placing her hand on my bulging skirt. She lifted the skirt and began to rub my cock with the flat of her hand through the thong. 'My God, you are horny' she said, as she continued to rub me. She lifted the waistband of the thong away from me and tucked it below my balls. This had the effect of squeezing my balls together and upward, and continued to stroke my cock. I tucked my hand down the back of the waistband of her surgical scrubs only to find she had no panties on. 'Yes, I'm commando tonight' she said. I shifted my hand down the front of her trousers and gently fingered her shaven pussy. 'Oh I'm gonna cum' I said, so she moved to one side and began to pump my cock harder and faster. I suddenly began to jerk and buck as the first two of at least half a dozen ropes of cum landed on the windscreen of a nearby car. 'Jeez, I've never seen you cum that far before' my fiancee said as my orgasm began to subside. I felt spent, but a lot more relaxed as we rejoined the party. We continued our mutual masturbation session later when we got home, but that's another story.