Ok so like the past two stories this one took place at my grandparents house. Anyway so it was dark outside. My grandmother was no home that night. She was out with some relatives of ours at a concert. So I was there with just my grandfather. I told him I would like some food. So I convinced him to let me stay home while he went out and got us some food. So I knew he would be gone for at least 20 minutes. So he left and once I could no longer see his car I took off all of my clothes. Then I picked them up and ran to room with all of my grandmothers dresses and other items in it. So by this point I knew where she kept most of her items. So I put on a pair of black thigh high stockings, a bra, and a thong of hers that I found. Then I unzipped a dress that had tons of flowers on it. I slipped the dress on. However I just zipped it up a little bit. Just enough to keep it on. Then I walked to the back door. And being as brave as I could be I walked outside. Luck for me the house next door didn't have anyone living in it. But the road was right beside the back yard. So if a car or people walked by I would be caught. So I ran into the yard. I could feel the wet grass under my stocking covered feet. It was incredible. Then after a minute of enjoying that I decided to be even more daring. I unzipped the back of the dress. Then I let the dress drop to my feet. There I was wearing a bra, stockings, and a thong that had an erect penis in it. Then quickly I started stroking my cock. Hard and fast. I stood in the same spot jerking myself off. Then suddenly my legs start to squirm. I started to cum. I shot my cum all over the yard. Then before I got caught I picked up the dress and ran back inside. I quickly took off the dress, bra, thong, and stockings. I put them back where they went and got dressed in my own clothes just in time. As soon as I had put my shirt on my grandfather had just got out of his car. I quickly slipped into the bathroom and then flushed the toilet to make it seem like I had been there the whole time. I washed my hands and went out. My grandfather never knew of what I had just done.