One time I was going hard and I decided that I needed to pee. I excused myself quietly while my life stayed on the bed and started playing with her phone, not caring that people were continuing to watch her just lie there naked. I went to the bathroom and tried to pee as best I could with a semi-erect dick. Having finished, I looked up and saw that a girl of no more than 18 years of age whom I had noticed had been watching us for the past couple of weeks now standing in the open doorway. She was looking straight at my crotch in a way that suggested this was a new, close up thing for her. Sensing what I was thinking she declared, "I've seen men's cocks before".
My dick was pointing directly at her and all I could say is, "You've seen mine, a few times, right?" I made her blush, which wasn't my intention. Knowing that we both didn't have a lot of time she continued, "Do you mind if I touch it?" Without thinking through the implications of my answer, I figured it was a harmless enough request in the context of what she had seen. I told her she could, so she sidled up to me and grabbed a hold of my cock with her right hand and then cupped my balls with the other. Her hands were small and it was more than a touch. My rather a full-on grope, the sensation of which immediately brought me back to full erection.
Taking the opportunity and looking to get some payback from our weeks of performance I asked her if she wouldn't mind showing me her pussy. She quickly turned away and I thought that was the end of that but she merely closed the door that was still open. She wriggled down her short and tight skirt and then her panties to reveal a lovely, shaved, camel toe pussy. I ran a thumb down her slit and then brought up my whole hand to feel the smoothness of her vulva. I lingered for as long as I could with my hand cupping her pussy and her still holding my cock. She released her grip and pulled up her panties and then her skirt in quick succession. She gave me a quick kiss on the cheek and exited the bathroom.
I followed about 10 seconds later and returned to the bedroom where my wife was still playing on her phone. People parted to let me through and the only comment my wife made was that I was "still hard". I re-entered her and in no time at all was cumming hard and then reaching for the tissues. Some people left while others lingered as we cleaned ourselves up. Once we started putting our clothes on everyone was gone. We went back downstairs and carried out the door. We had started coming earlier so were effectively leaving earlier. I caught the eye of the girl I had met in the bathroom who was talking to some friends and enjoying a beer.
Each time we go to the house party we say that will be the last but by the time Wednesday and Thursday of the next week comes around we start to get horny thinking about the show we could potentially be putting on for people on the Friday night -- and end up going. Let's see how many more weeks we keep doing this and where it might lead.