My Girlfriend Tes and I enjoy visiting a motel that has been converted for enjoyment of swingers, it's a small, 25 ish rooms, motel with all the rooms made over with mirrors, faux fireplaces, provisions for swings and most rooms have either a Jacuzzi or a 'love machine' chair. There is a large room with a swimming pool, two large hot tubs and an over sized bed, this area is 'clothing optional' and is generally 95+% nude. The names may have been changed to protect the fun...
I'm an older guy, and live out of state, Tes is mid 40s, and very sexually open. She's a curvy, voluptuous girl with 40DD tits, she says fat but I liken her to a Fijian fertility goddess. We arrived a bit later than we had hoped for the evening swim and found two chairs on the far side of the pool where we stripped down and stashed out clothes. We enjoy playing in the pool, as do most visitors and tonight was no exception. It became to crowded for me to swing her around and twirl her in the water so we entwined and she slipped my cock into her well lubed cunt and began to grind against me. We weren't alone in this as we looked around the pool. As often happens for her, being in the water, people surrounding us and my cock in her she soon came hard, biting my chest as she did. As is often the case, due to being a geezer and several meds I have an erratically reliable hard on, it comes and it goes, sell after feeling her flood my cock under the water (she squirts) I went to half staff. Doesn't deter her or even slow her down as she took my semi and used it to rub her clit vigorously until she came another time or two. Relaxed now she asked if Id rub her back for her so we moved to the bed after a quick toweling off.