I am 16 year old boy and started my first Saturday job in the stockroom of a large privately owned General goods store where Jennie, my 18 year old sister has been working as a sales assistant for the previous two years. I spent most of the time upstairs in the stockroom taking phone messages as to what to bring down to the shopfloor and so had little contact with the other staff other than brief thankyous etc when I delivered what was needed. The staff of shop assistants numbered some dozen and were all female, making me the only male in the workforce.

When the summer holidays began I was asked By Mrs Watson, the manager and owners daughter if I would like to work full time during that period, and because I had wanted a new gaming console and stuff, accepted knowing I could earn enough for what I wanted without begging Mom and Dad for the money. And that decision to do some full time work with the team of women changed their attitude towards me.

It started the first day when I arrived a couple of minutes early for my first day in the stockroom which had a frosted glass window between my area and the canteen/changing area to allow more light. I could make out the vague silhouettes of the women and could hear them clearly as they chatted and got out of their dresses or jeans to put on their blue nylon smocks that went to just above their knees. Knowing they were just in their underwear and tights or maybe hopefully stockings started to make my cock get hard so had to put on my brown cotton smock to cover the bulge in my jeans.

When the buzzer went for them to go down to the shop floor they trooped out of the canteen and a couple seeing me there on a Monday rather than the weekend asked to the others what I was doing there today. Glenda, a dyed blonde middle aged woman who I guessed was in her early fifties with a ok body, was the supervisor in the store told them “Oh Alex is working with us for the next few weeks”. Another, a chubbier dark haired woman in her thirties called Nichola or Nick for short replied “ Hope we have as much fun as Jennie was”. To that comment some started laughing and Glenda replied “That we will find out in due course girls”. And they descended down the stairs towards the shopfloor. I picked up a broom to start sweeping the floor and suddenly thought the phrase they used about my sister Jennie was odd, Nichola saying she hoped they have as much fun as Jennie was?…Jennie is still here!!. I dismissed the thought for now and began sweeping.

On the walk to work next morning, Jennie was as usual consumed with her phone, texting and stuff. I mentioned what I had heard the previous day about “hoping to have as much fun as with her” and what it meant. Jennie,s pace faultered slightly and she briefly moved her eyes from the phone before returning her composure. “ Oh, they were just having a laugh, but it,s just like you and your friends Alex, you trust them don,t you…well Glenda and the girls at work are the same…we are all friends, and keep our secrets and stuff”.

I was about to ask what secrets but at that moment I saw Tony, one of my school pals and left Jennie to chat with him for a couple of minutes, which meant I turned up at work a couple of minutes after my Sis. I passed the office of Mrs Watson, the Manager, and said the usual “ Morning Mrs Watson”. She was always there to open up and usually stayed till Lunchtime doing admin before going home and leaving the locking up and stuff to Glenda and the others. I entered the stockroom and as I got close to the frosted window I heard one of the girls talking to the others about the date she had the previous night and caught the reply she gave to someones question “I just let him finger me a bit while I wanked him off….well you have to keep them interested”. I recognised the voice..it was Viv, a girl a couple years older than my Sis. Viv was fair haired and had a slim body and I thought hardly any tits..of course me being a naïve 16 year old boy, seeing any girls tits would of been amazing. And hearing her discuss openly with her friends that she let her date finger her cunt and that she had wanked him off, suddenly propelled her to another dimension in my eyes..from thinking of her as being a plain looking girl with slightly buck teeth, I now imagined her letting anyone into her panties amd the thought of what her cunt feels like gave my young cock a solid hard on.

I moved down one of the stock aisles to the bottom and moved around the corner so I had a view of the stockroom entrance while also being concealed, and unbuckled my belt and unzipped my jeans and pulled my pants down releasing my rock hard tool and started to frantically wank the life out of it while remembering my viv,s voice telling the women how she let this guy into her panties to finger her cunt. I shot my creamy load within seconds against the wooden panel that concealed me and frantically used my handkerchief to wipe my cum off it and zipped myself up just as the buzzer sounded.

Over the next few days I got to know the women more as they often used to come up to the stockroom for odd items themselves rather than phoning me to bring them down. It often was an excuse too for some to have a crafty smoke outside the stockroom fire exit. The first one to do this was Lizzie, a thirty something brunette with curly hair and a chubby body and massive soft tits that her bra seemed to have trouble containing. She went to the fire door one day and said to me “Ive just got to have a quick fag…you aren,t going to tell on me are you Alex?”. “Of course not” I replied. Lizzie winked, opened the fire door and stood in the entrance and took out a pack of cigarettes and lit one. She gestured if I wanted one. I nodded no “ I don’t smoke” I said. “ No bad habits then Alex?” Lizzie said smiling….” I can,t believe that” she looked down at my groin “ No I cant believe that” when she had stubbed out her cigarette and closed the fire exit she stepped past me saying on the way out again with a smile “We will have to find out all about your little dirty habits young man”.

As days passed I got into the habit of listening to the Women,s conversations while watching them change through the frosted glass….always ensuring my outline could not be seen. And as it was their routine, they did not even think they were being listened in on, especially by a 16 year old. It was an education for me that women….especially when they are together, could be so openly crude about sex. I heard them talking about everything from giving blowjobs, how they like being fucked , to when they last masturbated and what they used to reach orgasms. And so when I saw or spoke to them they did not realise that I may know what colour underwear they had on, or I knew they had fucked themselves the previous night. Needless to say this knowledge virtually gave my cock a mind of it,s own, and I would often start getting a semi hard on when seeing the girls that I had overheared talking about their sex lives…and that included my Sis.