Camping

I was camping with my two friends. We were fooling around, having fun, when we decided to blow up the air mattress, only to realize we had no pump. We had to use my friends car tire pump. It had to be attached to the car to work. It was very slow and didn't do much good, so I went to relieve my friends after she sat with it for about 30 minutes. (we had to hold it into the air mattress for it to work). She and my other friend hung out by the picnic table as I sat to take my turn. I was in the drivers seat of the car, the door open, facing away from my friends, who were on the other side of the car. I began to drift and found myself getting horny. I had an idea. The car pump vibrated as it pumped, so I placed it between my legs. I found myself getting wetter and wetter as I masturbated outdoors with my friends only a couple of feet away. I had never been able to cum without using my fingers before, no matter what I tried. It took awhile, but soon I was breathing heavily and shaking as I came, my mind filled with horny thoughts. Soon after I had to remove the pump from my super sensitive clit. It was such a hot expereience, and my friends had no idea. Just writing about it is making me so horny.