Here you go!
It happened 15-20 years ago, but it still happened, so I'm going to post this here.
The summer between high school and college was a crazy time for me with the ladies. One of the best though, was my public daytime sex romp with my tall hot cumslut nympho girlfriend. I'll set the scene: We had been dating for almost 2 years at this point, I was 18 and she was 17, and since we became sexually active in our relationship, there was almost nothing we didn't try and we seriously almost never went more than 2-3 days without getting each other off, and most of the time it was every day.
This particular day though was one of the outliers. It was a summer saturday in our suburb of DC and I had returned the previous night from a 2 week long volleyball tournament trip and I was leaving the next day for a week at the beach with my family. The volleyball trip was great, but I didn't want to do any hooking up because I had a great sexy girlfriend who wanted to do all sorts of kinky shit to me, but with 11 teammates and 3-4 coaches plus a couple parent chaperones, it was really really hard to get enough time to jerk off, and back then, as an 18 year old with a super high porn and nympho fueled libido, I was jerking off or having sex like 3-5 times a day usually. Needless to say I was DESPERATE and frankly, after 2 weeks, so was my girlfiend Kerry.
We had one day, and we were determined to find a place to fuck like rabbits, but it was pretty difficult when your parents are hom and you're 18 and you don't have any money and it's daytime, which made fucking in the car more diffuclt. We had tried going to a movie, but we didn't think ahead and went to a recent release so the theater was packed, and while it felt really really good getting my cock and her pussy rubbed under our shorts, neither of us wanted to cum that way. No, we straight up needed to fuck. After striking out at the movies we left halfway through and tried to come up with ideas. A hotel was out because we didn't have that much money, and well, what 18 year old thinks of that sort of thing.
After driving around town, we decided we should take a walk and drove to Rock Creek Park, which if you're unfamiliar with the DC/MD area is kind of a long winding trail through the city and suburbs with a path and various fields and grassy areas surrounding a creek/small river that goes on for several miles. We drove down to our usual spot we'd been to for picnics and walks and parked and started walking down the path that lead to a less populated region of the park. I don't know that we expressly planned what would eventually happen, but it seemed like we knew what we were doing without talking about it. As we walked, we talked and were kind of talking dirty. Kerry was fucking delicious looking that day, I still remember it (plus I have pictures somewhere, but alas, not digital) clearly. She was tall, about 6' with really long legs and a lithe volleyball player's body. She had a great ass and was very comfortable in short spandex and a sports bra. She didn't have a six pack, but had smoothe abs with toned legs and arms and shoulders and very perky big A or little B cup breasts with very sexy puffy nipples. She had a little longer than shoulder length dark brown hair with streaks of auburn in it and bright blue eyes that seemed to change color when you looked at them for more than a glance. On this day, her hair was pulled up into a loose knot with a hair clip and she was wearing a jean skirt that was entirely too short on a girl with legs as long as hers (but I wasn't complaining) and a white camisole tank top with no bra on (she clearly didn't need the support and it was easily 95+ degrees outside in the summer in DC) and wedge flip-flops that made her like 6'2 and accented her sexy calves. Back then, I was 6'6 and maybe 200lbs if I had my shoes on, but I was all wiry muscle with zero fat (seriously, I had like <3% body fat, it sucked when I tried to gain weight for basketball). I had long-ish sandy brown hair (think 90's surfer hair, not like a mullet or shoulder length) and blue eyes and I was wearing a t-shirt and cargo shorts.
As we're walking down the path, with my arm around her shoulders, we pass several people and we're trying to keep our dirty conversation on the down-low.
Kerry: (Gesturing to a lady walking towards us in the opposite direction) "Do you think she knows what you're going to do to me?"
Me: "I don't even know what I'm going to do to you. . . but I know you'll like it."
K: "Maybe she'd want to watch. . . would you let her watch?"
M: "Yeah, she can watch, but she looks old as shit, I don't want her getting any ideas" (she was probably 40, but 18 year old me did not have the concept of MILF down yet)