I had a summer job at the local riding stables as a handy man and one of the girls who rode from there was Dawn, she was 13 and an absolute stunner. Her tight riding jodhpurs showed every contour of her cute behind and often she wore a tight t shirt which showed off her firm boobs and just visible were her nipples poking out.
I often helped her get onto her horse and watching her firm thighs spread over the saddle was very horny. When she came back in and got down, her joddies often showed the shape of her vagina and the material often sucked up into her crotch.
One afternoon her horse was lame and she had to help clean the yard with the power hose. I started the machine and showed her what to do and left her spraying the powerful water jet over the mucky concrete.
A while later I came back and Dawn had her back to me, I paused in my tracks and looked at her perfectly shaped bum in those tight jodphurs, her panty line clearly visible cutting across each cheek.
As I stood there for a while I wondered what she was up to as she was holding the spray lance in front of her and appeared to be frozen to the spot. I walked a little closer and then realised what she was doing, she had the hard rubber hose jammed between her thighs and yanked tightly over her crotch and I guessed the throb of the water was getting her off as the hose pressed right up into her crotch. I could even make out her bum flexing as she stood there, my cock sprang up in my jeans so I slipped away and held the thought.