I recently did this for the first time. I was driving home from a memorial day camping trip. I was in the car by myself and feeling so horny because I hadn't gotten off all weekend and I had to share a tent with others and had no privacy. I was wearing shorts, a bra and a tank top. I was going about 40mph on a two lane hwy way I pulled my breasts out of the top my bra and up over the top of my tank top.I have "D" cup breasts so they stood out like big missiles. My nipples were hard and pointy. I got VERY wet and excited thinking about the glimpses the opposite traffic caught of my naked breasts and how many guys I made hard. I got so wet I had to slip my fingers up the leg of my shorts and rub myself.