It had been a particularly long shift at the diner, I was tired, grubby, hot and horny and still had a 40 minute drive home.
As I drove the familiar route home my thoughts wandered to the hot shower waiting for me at home and my hands strayed to my bare thighs now showing under my skirt which had ridden up in the seat. The seat feeling cold against my hot skin gave me goose bumps as I continued to stroke just inside my thighs. Switching the car to cruise control I parted my legs slightly and ran my fingers across my panty clad pussy feeling the moisture already beginning to appear.
I gasped as I ran a nail across my clit still hidden under my panties and felt the familiar throb of an impending orgasm. Without thinking I quickly pulled over in to a layby and killed the engine and lights, this wasn't going to wait another 30 minutes.
My hand snaked back between my legs pulling my panties to one side, my fingers sliding easily inside me as my excitement gathered momentum. Ripping open my blouse I exposed my bare breasts pinching my nipples tight as my fingers worked their magic inside my pussy. Thumb pushed hard on my throbbing clit I was panting now, groaning in to the night air.
My orgasm was building so fast I didn't notice the patrol car pulling in behind me, riding my fingers harder now my orgasm, just there on the edge, and just as I went over the edge moaning my orgasm to the night air, I heard a knock on my window and a voice say "could you step out of the car please madam".
As I came down, my foggy brain realised the Patrolman was still standing there waiting for me to get out of the car. I realised he had just witnessed me cum right there in my car and the sight had clearly had an effect on him given the large bulge in his trousers. As I got out of the car I realised there was no hiding my ripped open shirt and ridden up skirt and I must have looked a wanton sight to anyone driving past at that point.
I tried to cover up the best I could and with a flushed face started to apologise for my behaviour. The Patrolman just looked at me and in a calm and controlled voice told me to move to the front end of my car and wait there. I assumed he had gone back to his patrol car to run my registration plate but instead he moved his car up to park next to mine but obscuring the front end of mine from the road.
As he got out of his car it was clear that the sight of me masturbating in my car was still having an effect on him and I could clearly see the outline of his cock through his uniform trousers.
He walked over to me standing by my car and asked me if I did this kind of thing often. I said no of course not and that this was a one off and wouldn't happen again. He looked at me and smiled, said he didn't believe me and I now had two choices in how the matter of my public indecency could be dealt with.