Sandra was horse crazy, we both were and working on the farm at weekends, gave us the opportunity to ride, with the occasional weekend away, to ride on the island at the farmers sisters horse riding school.

We were alone a lot of the time mucking-out the stables and brushing the horses down, and the farmer once took us along to watch out Mares be Sired.

We were both old enough to know what was going on and as I have mentioned in several stories before, we became sexually active with the old man, but this incident is about something with a slight twist to it, Sandra, who was slightly more developed than I was, had a fetish, she wanted to be a 'Pony-girl', and sent off to the UK for a bridle, reigns, plumes, and crop and the man over there sent a tail, with real horse-hair connected to a butt-plug, asking her to send him some photos with it inserted.

'You have to shove this up your arse', I said studying the plug, it was very big and looking at Sandra's arse, it appeared too large.

'I will get it in', she replied, I had never seen her so excited when the box arrived, and once dressed I must admit it was kind-off erotic to see a girl dressed in her sexual fantasy, and it took all my will power watching her trot and behave like a pony, not to burst out laughing.

She knelt on the edge of the bed, fully attired, the bridle pulled back tight, her tiny breasts poking through the chest halter, which was tied tight like a Victorian corset, making her small arse stick out, 'Push it in', she slavered through the bridle, her saliva dripping off the leather and wood piece at the back of her mouth.

I went in behind her and coated the plug with an anal lubricant, then taking my finger inserted it up and poked around, slowly working her open, and then without warning pushed it home.

The plug fitted snugly and the extra part on the front curved around her open crotch and went inside, it was made of very soft fibers and they vibrated when turned on.

Sandra stood up, but because of the tightness of the straps, could not straighten her back, this in turn made the tail stick out from her arse, and once I had secured the elbow straps and wrist cuffs, Sandra was seriously trussed-up and looked like a show pony with her feathers set on her head, her small breasts sticking out nude and exposed, her bared bottom with the hair standing out and her exposed vagina, waiting to be inspected by the first passing male.

I held her reigns which came either side from her head halter, and she trotted around the room, aided by my use of the riding crop.

I took some photos and we sent them back to England, where there is a club for girls into this fetish, The guy phoned Sandra and she was invited over, telling her parents she was horse riding.

On her return she told me they all lived on a farm where the wife was also into it and they were an American couple.

There was fourteen girls, all with the same fetish and serious competition, between the girls, dressed in their various costumes, Sandra's costume pleased the couple most as she was nude, but soon the other girls followed suit and started showing.

They did a lot of dressage and short jumps, but he did a lot of grooming with the girls, whenever the wife went to town, awarding points for obedience, feeding the girls carrots, after inserting them into their vagina's during their masturbation sessions, each girl orgasmed daily, brought off by the master.