A brief history
I remember from a young age crouching down on my heels and feeling a surprising 'shock' coming from between my legs. Of course I didn't know what it was, but found myself crouching for longer and longer periods!
When I was about eleven I started humping pillows and whatnot, even putting a tennis ball into the pillowcase of a body-sized pillow, holding it in place with a rubber band and going to town. After a few weeks of this, I got the feeling I was about to pee and ran for the bathroom. Being scared I would wet my bed; I don't even remember that first orgasm. However, when I reached the toilet I had a hard time peeing and realized how sensitive my clit was, in addition to my racing heart and feeling a little light-headed.
Since then I've masturbated frequently, and went through a period of exhibitionism. I lived in New York and went to school in Ohio and made frequent long car trips between the two locales. Sometimes when other cars passed, I would put my medium-sized glass pipe between my legs to hide it- especially from trucks that could see directly into my little sedan. Pretty soon I found myself greatly enjoying the sensation of the thick glass up against my crotch. I started wearing button-down shirts on these car trips and started by casually exposing my large yet bra-encased breasts to passing cars. At first I was too scared to look the other drivers in the face, but soon I got so hot I had to see them with their faces against the glass and eyes wide. Soon I removed my bra and drove with my shirt completely open, but available incase I passed a family or other inappropriate driver. As my left nipple is pierced, I received A LOT of attention. Of course this escalated to me opening my jeans.
This was best when trucks passed, as I could not see their faces and they could not see much besides my lower torso. I would get many honks and hollers this way! Eventually I would have trouble concentrating on the road, and would pull off to rest stops. There, I would park away from the building and facing the route the trucks would take into the facility, strip completely naked and rub myself to explosive orgasm. I soon started bringing my vibrator and using that to tease my nipples and then my slick pussy. I don't really know if anyone at the truck stops saw me, but I would fantasize about a trucker seeing me and then jacking off thinking about it-or even driving beside me and pleasing him or herself!
If you find yourself on the highway or at a truck stop, look around-I might be there too.