After many years of marriage we were looking for something new to enjoy in our sex lives. We had met straight couples and had threesomes so a meeting with a bi couple who would extend our sexual experience was exciting. This bi couple said they enjoyed watersports and we had not tried this with another couple and it was something Joanne, my wife, wanted to try. We met Tracy and Mark through a swingers website. We met for a drink at a hotel and we got on well and decided to get a hotel room. Things progressed quickly and we were all naked on the bed just touching, licking and sucking what was close by. We enjoyed an hour of this, me and Mark had both spunked over the ladies tits. We rested and chatted some more. Tracy asked me if I wanted to ‘flood her cave’ I thought it meant just cum in her, which it is but also she wanted to me to stay in her for as long as possible then piss into her. I said I would give it a go. We started licking and sucking again but soon all eyes were on me and Tracy. Tracy lay on her back opened her legs and beckoned me to pump her in the missionary position. I did this whilst Mark licked my balls and this made me cum quickly. Tracy gripped my buttocks and held me tight to her pubic bone. I could feel my cock all slippery in her hole caused by the slickness of her juices and my cum. My cock remained hard and I was unable to piss. But Tracy held me tight. It was a good few minutes before I started to piss and fill Tracy’s hole, the trickle of my piss really excited her and she moved her hand down to her clit and started to rub it as it was now clear from the noise she was making and the tightness she held me that she was having an intense orgasm. When we both finished she quickly stood up and crouched over Mark who was lying on his back, my cum and piss splatted out of her pussy onto his stomach which he rubbed into his body. Joanne said she wanted some and Tracy lowered her pussy onto Joanne’s mouth and I could see her licking and sucking frantically, it was a most erotic sight. Tracy told Joanne that she loves her pussy filled with cum but the warmth and volume of piss sets an orgasm in motion every time. I then watched Mark and Joanne go the bath and watched Joanne kneel before Mark whilst he pissed on her tits whilst she rubbed her clit. She then sucked his cock clean. Afterwards I got in the bath and Tracy pissed on me whilst wanking my cock. My last dribbles of cum fell on my stomach which Tracy used as a lubricant with her piss to slide her pussy up and down my stomach, it was so horny I wished I could have cum again. We had spent three hours together and then said our goodbyes. Joanne and I definitely enjoyed this new experience and the erotic memories will stay forever.