As usual I was doing my weekly shop in my favourite local discount supermarket, nice and cheap is what I like.

My preference is always to shop at night when there are few other shoppers about, and on this occasion I'd chosen my time well and was the only shopper.

My trolley was full to the brim so I walked over to the only till with a light on (no assistant there yet) and started to unload onto the conveyor. Very soon I noticed a girl heading for the checkout for me.

She was quite pretty, short (maybe 5 foot 6 at the most), a girl-next-door type, blonde hair tied back in a pony tail, early twenties I thought and, of course, dressed in the rather drab supermarket uniform.

Most of the female staff wore the standard black trousers, often so tight that you could enjoy their bum cheeks.

I noticed straight away however that this girl was wearing a short black uniform skirt, several inches above her knees, with bare legs underneath.

It was going to take me a long time to load up the conveyor and in this shop the assistant only starts putting items through when everything is ready to go, so she hoisted herself up onto the stool provided (which was very high), gave me a polite little smile and waited for me to finish loading.

As I continued loading I glanced at her and immediately felt my cock swelling up inside my pants. I don't know whether she had forgotten that she was wearing a skirt (and a short one at that) instead of trousers, or was just plain careless, but she was sitting on the high stool with her hells tucked in to the metal bar and her legs splayed open. While shuffling onto the seat to get comfortable her skirt had ridden right up her bum and thighs.

Her legs were parted just as if she was wearing trousers to protect her modesty and I had a perfect view up her skirt just a couple of feet away from me. In this position I was able to have a good close look at her pantie-covered fanny while she was looking around the shop, patiently waiting for me to finish loading, totally unaware that I could see right up her skirt.

To be continued...