I had a very strict upbringing and at 23 found myself in a very (sexually) boring marriage, so I found ways to spice my sex life up.
We used to go camping a lot. The two of us and either a tent or caravan. There wasn't much sex at home, but none at all in the caravan. So I used to get up at night and wander into the woods that always forms a dog walk on caravan sites. I would do it very late, usually around midnight. There, I would get my cock out. Even that was incredibly horny for me and I would jack off revelling in the decandance of the act.
One night I was out in a beautifully warm, even hot summer night. I walked into the woods and made sure I was alone. Then, I decided to go one better and strip completely. I took my t shirt off then my shorts. I was hard in an instant and I started to jack. Looking through the trees I saw the nearest caravan had a clothes line and on it were some panties from the two teenage daughters who were there with their mum for the week. That provided some visual stimulus for me and I imagined those little panties hugging a moist teenage pussy. Lovely, I was about to cum when a light went on in the caravan and I froze. It's door opened and one of the girls came out wearing a long t shirt. She stepped into the woods a few paces and I thought she was going to discover me. But what she did next was totally amazing. She stood, lifted her t shirt right up showing a sparsely haired pussy. She spread her knees a little way and peed standing up. It was the sexiest thing I ever saw. Holding my breath I watched her finish up and waited for her to go back to her caravan. Instead she looked in my direction and said in a soft but clear voice. 'So, are you going to finish now?' I took a step out from behind the tree I was hiding behind and stood there stroking my cock as she watched. As I got closer her hand went between her legs. She didn't jill off, just touched herself a little. I shot some pretty impressive ropes of cum onto the floor and she smiled and mouthed 'Thank you' before going back to her van. The next night I was in the same place but she didnt come out. The night after though, I found a pair of panties on my tree, still moist. On the last night though, we both had an orgasm in the woods and not with our own hands.
There was something so horny about knowing nothing about her. I never knew her name or her age.
A few months after this a magical change came over my wife. Suddenly she couldn't get enough and we would have sexy fun anywhere and everywhere. I have no idea what caused this, but I am very grateful for it.