This awakes a memory of the very first time I used panties as a masturbation accessory. It combined with my existing enthusiasm for masturbating outdoors, something I have done regularly ever since.I was heading to the mountains for a few days of hiking and photography. Such trips also include generous time allocated to masturbation, specifically outdoors. On the long drive I stopped at KMart for supplies, and happened to walk past the lady’s underwear section. On impulse I grabbed a hanger with three different panties on it. Knowing that I had those naughty garments with me kept my penis semi-excited for the rest of the drive.Once I was well up in the forest I went for my usual first hike — off trail, looking for a nice secluded spot where I could get naked and masturbate. I do that all the time, and usually set up a camera on a tripod so I can capture the fun.I got naked as usual, instantly hard from anticipation, and stroked a bit, even more excited than usual. Then I modeled the panties for the camera, lots of poses with each one, starting with my penis modestly hidden, then with it sticking out dramatically through the leg hole or over the top.After half an hour of kinky fun like this, my first time in panties, I lay back on a smooth log and stroked to climax, carefully laying my long streaks of semen on the warm dry wood.