I was on a bit of a traveling trip recently, and one day involved several hours of driving across rural areas of the South. I like womens underwear and often do a little shopping while I'm away from my home area so that nobody I know will see me. I stopped at a small discount store and picked up some panties. 'stretch satin' hipsters, they feel really silky and also stretch enough to give room where there needs to be some. Next I stopped in a little town at a thrift store to see if I could get some nice *used* underwear. That is the best, but I often chicken out in those stores. So this one had all the panties on hangers, which makes it easy to check them out and eyeball the size compatibility. I went through and picked two pairs out. Meanwhile a woman came by and looked through the bras nearby, then turned toward the panties, saw me and sort of startled and went to another area. I put the two pairs in my basket, and shopped for a men's shirt as sort of a cover for when I checked out. I timed my check out when there were not many other people at the counter and the lady put my items in a bag with no comments or funny looks.
A while farther down the road I took the items out of the bag and fondled them while driving. I stopped in a church parking lot and slipped on the stretch satin panties. My cock was huge and hard and wet at the tip by now. I unbuttoned my pants and started teasing my hard cock. Then I remembered that I had put some porn photos on my GPS. So I set them to run as a slideshow. I put a little paper towel in the panties to catch anything that might come out. I was sort of strumming my cock head and the sensitive area below the head like a guitar. I usually can't come this way, and need real stroking to get off. I got very very excited and just kept going as I glanced at the photos and my cock. Finally I felt it building and Wow what an orgasm! I was breathing very hard and got a little lightheaded when I came.
Then I just relaxed and started driving and it was so nice. The satiny panties felt so good on my come covered shrinking cock. I peeked in there and it was a beautiful soggy mess inside the silky peach colored panty fabric. I just left it like that until it was time for my next stop then cleaned it up.