I'm not sure where or when my story started; it could have been in the summer of 1973 when I was baby-sitting my brother's young son two nights a week not long after my 18 birthday; or possibly in 1968 when my eldest brother George brought Linda, his pregnant bride to be home to meet my family for the first time and an instant crush hit my like a lightning rod.
I'm Rod and in 1973 I was 18, lanky and skinny with a mop of dark curly hair and was at College. Today I would be called a 'geek' or 'nerd' but back then I was more or less invisible as I was top or top 3 in the Academic stream, specialising in Maths, Chemistry and Physics, which while not quite 'easy' came naturally to me.
Apart from my College work I had two hobbies, my racing bike which I used every single day and would regularly go on solo rides of 50/60 miles every Saturday, Sunday and holidays too. The other hobby was copious masturbation .... I was a late developer possibly because I had attended a Catholic Boys school, so sometimes it was twice a day!
Their previous baby sitter moved on around the time of my 18th birthday and it was agreed that I'd take over on Saturday nights when my brother and his wife would dress up to the 9's to go out to the local working men's club with friends and roll back drunk at 11ish or sometimes later if they had been to friends house for more drink.
My nephew was great and no bother going to bed by 7.30 which left me an hour or two to do my homework or some revision, then a couple of hours for me to go through my sister in law's knicker drawer and wash basket, where I'd use her sexy knickers and bras to rub over my cock and face while knocking out a couple of breathtaking loads, then carefully putting them back so as not to alert her suspicions.
My brother George had been in the navy for the first half of my childhood, so I barely knew him as he would return from some exotic posting every six months or so with gifts for my other brother and me.
In 1967 he left the navy and got a job in an iron and steel company two towns away, and a couple of months later broke my mum's heart by announcing his young girlfriend was pregnant. At my age I wasn't aware of all the machinations involved; but I instantly fell in love with the 5ft nothing Linda on that first visit ... her blonde hair was in a fashionable beehive and she was wearing a short blue mini-dress and lots of make-up and she had the most amazing eyelashes, as like my brother she was a Mod.
As my mother feared it wasn't to be 'love's young dream' for my brother, but they hung on in there, making the best of the situation as in those days divorce hadn't been invented in our town.
My baby-sitting duties soon included two out of three Wednesdays when Linda would go to the bingo with a friend, while my brother either worked 2-10pm or night-shift.
On these nights Linda would come back at about 10 pm a bit squishy after taking a couple of drinks in a local pub with her friends.
Linda and I were good friends by this time and she obviously knew that I had a crush on her, and teased me unmercifully on her return, 'accidentally' letting me get glimpses of her bra and boobage or up her short skirts. Sometimes I'd stare too long and she would giggle while wagging a finger making me blush.
It was very difficult riding my racing bike the 6 miles home with an erection, I can tell you!
When the summer arrived I was invited to join them on a caravan holiday at a local seaside resort. While it was good to get away, it was apparent my job was to look after my nephew for six nights while they, or at least my brother got hammered in the entertainment centre at night.
The weather wasn't great on Monday so we went on a walk along the cliff top to a pub in the next village, where they bickered about the amount my brother drank; especially as he planned going to the entertainment centre on the evening too.
He was well lubricated when we got back to the caravan and after a sleep and after fish and chips for tea, they went back out at about 7.30 ... returning at 11 with my brother rolling drunk.
The bonus was that very early on the Tuesday morning I was still half asleep in the living area when I heard their bedroom door open and, squinting my eyes saw Linda come out quietly, only wearing a short nylon nightie that barely covered her arse and did nothing to hide her nipples and the bounce of her 32b tits as she went into the tiny toilet.
BOING! Instant erection and it wouldn't go away when I heard her pissing into the metal bowl.
A couple of minutes later she tip toed past me and checked on my young nephew opposite. What I wasn't prepared for was when she bent over to stroke his hair, leaving her gorgeous arse that was covered by a pair of matching tight lemon, almost transparent knickers only a foot or so from my face, exposing her arse crack and some pubic hair too.
It was all over in seconds; but a memory scorched onto my brain for these last 50 years.
My young cock was so hard it hurt; but I was too afraid to masturbate and had to wait until after breakfast when I went for a shower in the block a hundred yards from our caravan.
Thankfully the cubicle had a screen door, affording me some cover while I knocked one out, reliving the vision in lemon from earlier.
Later we all went to the beach where Linda wore a bikini which my brother virtually ignored but I couldn't take my eyes off, making my cock grow stiff in my trunks as she moved to catch the sun, occasionally giving me a look at her slit and some escaping pubes; much to my sister in laws amusement when she noticed me looking -- pretending to be shocked, then grinning and winking.
She teased the hell out of me trying to get me to come down to the water with her and my nephew while George read a spy thriller. Eventually I gave in and discretely covering my lump with my hand I ran ahead into the cold surf which helped relieve my problem for a while.
When they came back that night they were very touchy feely with each other and couldn't wait to go to bed, where I heard them noisily having sex, with my sister in law being particularly vocal ... "Yes ... yes... harder ... faster ... oh yes ... so good ... so fucking good!"
While she regularly used words like bugger and bloody as well as shit, much to my mum's angst, I'd never heard her use the F word, in fact I'd never heard any female use it in those days.
The next morning I heard her bedroom door open and squinted to see her wearing the same lemon nightie as she went to the toilet, then walk silently across the room to comfort my nephew; only this time her nipples were poking through the thin nylon material and when she bent over she wasn't wearing any knickers. My chest tightened as my cock sprang into action and time stood still. The shadows didn't make anything clear but I saw plenty of pubes and I think her slit; but I was more than happy getting a great view of her sexy arse.
It was over all too quickly and when she turned to return to the bedroom she stroked my hair and I swear that I heard her giggle as she walked away.
The next couple of days followed a very similar pattern with Linda flashing her naked arse at dawn and taking great delight in pulling faces when she saw my 'lump' on the beach and occasionally commenting on my muscular legs, courtesy of my cycling.
When she flashed her naked arse and slit I was never sure if she wanted me to touch her ... which I was very nervous about doing as I was painfully shy, or was it really accidental?
We arrived back at their house about 5 on the Saturday which gave them just enough time to eat a meal, get changed and be off to the Working Men's Club just after 7 leaving me with my nephew again.
I actually had two fabulous wanks that night, sniffing her used knickers that were dumped on top of a heap of clothing from the holiday.
As usual they staggered home at 11 and my brother immediately went to the toilet leaving me alone with my sister in law. She was very giggly and a bit excitable as she profusely thanked me for all my help the previous week and then mysteriously 'wondered how she could ever thank me properly' before standing on tip toes and planting a kiss on my cheek and brushed her boobs against me.
My head was spinning as I ran for the last bus home dragging my suitcase by my side all the time trying to adjust my achingly stiff cock.
Over the next couple of days I went on some long bike rides which helped cure my constant horniness; but it only put off the inevitable, wanking myself silly on my return home.
On one of these days Linda visited my mother and left a message for me to look after my nephew on Wednesday night so she could go to the bingo.