It was so hot and humid outside and I just wanted to chill in the bleachers at the park with my friend. I wanted him to hear this song I liked so I turned it on. Immediately I got the urge to twerk. I was wearing my dress without bra or panties and as I twerked I could feel my dress riding up. I had to yank it down so many times I just didn't care, and up my dress came. Everyone could see my ass and pussy, even guys at a loading dock across the field.