Over the summer, my best friend and I were looking at colleges, and one of them we were looking at was in the next state over. Instead of flying, both of our parents agreed to let us drive there for about a week, almost like a short vacation.
The whole time we were there was pretty uneventful. We visited the school, got the tour, etc. On the last day, we were trying to find something fun to do, it wasn't until we started coming home that one of us found something. When we were on the highway, it was getting a little late, so the sun was going down. After we had been driving for about a half hour, my friend got a smile on her face and said she just thought of something. When I asked her what she was talking about, since we were already going home, she suggested that we both drive back naked. I thought she was joking at first, but she told me that she was serious, so I told her that I would if she would. She had me get off at the next exit so we could find a place to stop, and when we did we stripped off everything we had and took off again, but also, she had me put the top down on her car.
As soon as we got back on the highway, my nipples were rock hard from the wind blowing through the car, even though it was a hot night. For the first few miles, we were a little scared, so we were kind of hunched over in our seats, but after a while, we got a little more comfortable with it. Eventually, my friend told me that she was really getting horny, and I told her I was too. She told me that she was going to masturbate right there, so I told her to go for it. She put her feet on the dashboard, spread her knees and started fingering herself. It was a real rush, especially when we passed by another car, because I know more than once we were being watched. I could tell that she was really liking what was going on, because she was so wet that I could her her fingers squishing around her pussy lips. It didn't take long before she came, and I told her that it was my turn. We pulled over again and she got into the driver's seat, but this time I got into the back and laid down. Thinking back, it wasn't a good idea because I didn't have a seatbelt on, but at that point I was so horny that I didn't even think about it.
We started driving again, so I put one foot on the back of the driver's seat and the other foot hanging out the back, leaving my vagina completely open and vulnerable. At one point when I was doing this, a truck passed by us, with a younger guy driving, and when he saw what I was doing, he slowed down and just watched me, looking shocked. I acted like he wasn't even there, wriggling in the seat. When I came, I came incredibly hard, leaving a wet spot on the seat. I poked her on the cheek with my toes and told her I came, so we pulled off yet again and switched.
We did this over and over again the whole way back, both of us cumming five or six times. Once we started getting close to home, we had to put our clothes back on for obvious reasons, but it was fun while it lasted. When we got home, both of our parents wanted to know all about the trip, but when we told them, we just so happened to leave out the details of the drive.