Between leaving school and starting at Leeds university I had five months with no studies at all. I was still living with my mum at that time, dad had left us years ago and so it was just her and me living in a mid-terraced house in a modest street.
My aunty Pauline lived in the house next door, and as I was growing up I was able to split my time between the two houses. This worked well as my mum was a nurse and worked a night shift from Sunday to Thursday nights so I often stayed over at aunty Pauline's house.
Mum was 56 years old at that time, but despite going to work in uniform, always managed to look glamorous. She was quite a big lady, full breasts, large bottom and big thighs, but always took care over her make-up and wore high heels, only changing into flat shoes upon arrival at work.
As I grew up, nudity was a normal part of life sharing a house with mum. She would walk naked from her room, and would often use the bathroom with the door left open. This had always been the case and seemed perfectly natural, but as I'd got older it aroused me greatly, although I never let on because I didn't want this to come to an end.
Every day before work, my mum's routine was to dress in her underwear and shoes then come downstairs to iron her uniform in the sitting room. I always made sure I was watching the television at that time so I could see her standing behind the ironing board in her black stockings, high heels, nylon slip and bra and pants, before pulling the uniform on over her head.
After mum had left for work, I often masturbated while thinking of the image of her standing in front of me in her underwear with her big boobs and fat thighs wobbling as she ironed her clothes. In my imagination, I usually came off over her stockings, pants, bra, or over her bum hole or vagina. Latterly I had taken to removing a pair of her knickers from the laundry basket to smell and lick while masturbating myself to the image of my mum's naked body. I would often wank my hard prick, and at the end, put the panties under my cock and cum off into the gusset, spraying my filthy blobs onto the soiled cotton material. Sometimes there would be a pair of stockings which I used to wrap around my cock to heighten the rubbing sensation, but the best of all was when mum's panties were all rolled up together with a pair of worn tights. This allowed me to smell the even headier aroma of mum's cunt as it had spent all day (or all night if at work) sweating away in the confines of the nylon gusset.
Mum's tights were always fantastic to cum into. They were invariably a light tan or flesh colour, very sheer and felt fantastic against my cock as I wanked my sperm out onto the nylon gusset. Sometimes I wrapped some of the nylon around my left middle finger and touched my bum hole as I shot my mucky filth into the panties, always thinking about mum while finishing off my cumload.
Sometimes, if aunty Pauline was out while I was round there, I would look through her laundry basket and do the same there. She was definitely a tights woman, not stockings, and wore very large old-fashioned knickers which were great for spunking off into. Aunty Pauline was 60 years old that year, and was taller than mum, as tall as me in fact, and although not fat, was quite heavily built. She had heavy thighs and generous breasts, wide hips, but an attractively curvy waist. Her and mum had a substantial effect on my sexual preference for larger ladies, thanks to my formative years having been dominated by their presence.
One Saturday, mum was sleeping after her night shift and I crept into the bathroom quietly so as not to wake her, and removed the black stockings and white panties she had worn at work the night before. I took them into my room, closed the door and undressed. I started as always by smelling the inner gusset of the panties to savour the acidic aroma of mum's cunt on the material. I then flicked the end of my tongue all over the smelliest area to get the taste of her vaginal juices, and masturbated myself using her stockings wrapped around my stiff prick. As I felt my cum starting to take hold, I quickened my wanks, and used dirty words to myself to heighten the sexual pleasure of the cumshot. 'Fucking filthy cunt, I'm spunking off in you, you dirty fat old slag. Cumming now, here it comes, open your fat legs you filthy fat old cunt...' and so on until the blobs of sperm shot out of the end of my penis into the cotton material, jet after jet squirting off into mum's big panties.
As the final blobs of sperm oozed out into the knickers, my bedroom door suddenly opened and in came mum!!! She looked at me and retreated immediately shouting 'sorry love, sorry,' in her unbearable embarrassment.
I panicked, shoved the underwear under my pillow, put on my clothes and ran out of the house and around next door to aunty Pauline's. I was shaking and my eyes were red as I tried to hold back tears. Aunty Pauline was shocked to see my state, and sat with me, holding me tightly asking what was wrong. At first I couldn't speak, but eventually told her mum had caught me being rude in my bedroom! Aunty Pauline just held me making soothing gestures and noises and telling me it would be alright. Eventually, she got up and told me I could stay there that night and I needn't go back home to face mum until tomorrow.