I had turned 19 by the time I eventually got to housesit for Mrs Mansfield.
Mrs Mansfield had been a family friend who used to visit us regularly and we occasionally visited her and her family.
She was a married woman with two children whose friendship with my mother in particular, led to both women going away on trips together from time to time.
Knowing that Mrs Mansfield was both much older than me and also a married woman made my thoughts about her all the more naughty but also largely unrealistic as I knew there was virtually no chance that these exciting thoughts would ever come true.
Even still, I always found myself thinking very intensely about Mrs Mansfield and the type of underpants I imagined her wearing on a daily basis.
She was a nurse and frequently visited our house in her white work uniform.
Seeing her natural form in this attire simply fed my fantasy and of course my thoughts naturally extended well beyond just the shape, size and colour of those big undies that I pictured just sitting underneath her white nurse's skirt.
It was on a regular visit to our house one day that I experienced something of a life-changing moment when I actually got to see Mrs Mansfield's underpants for the very first time. It was just after my 18th birthday as I remember it and I had definitely begun masturbating regularly over Mrs Mansfield, and her underpants in particular, so it made this unexpected moment even more powerful and enduring.
Mrs Mansfield was quite a big-bottomed woman -- not in a morbidly obese or disproportionately "ugly" sense -- but more in a mature, child-bearing, shapely sense.
So, when Mrs Mansfield bent over one day in front of me for whatever reason it was, I got a very clear and uninterrupted view of not only her wide, womanly hips and aforementioned big bottom, but most importantly of the outline of her big, white underpants underneath her work skirt.
Then and there, a large slice of my pre-existing fantasy about Mrs Mansfield was fulfilled in one hit. Clearly, I could see that Mrs Mansfield's real-life underpants were exactly how I had imagined them underneath her nurse's uniform-- big, full-bottomed and white -- covering her curvature precisely and just how I had envisaged them in all of my fantasies.
From this point on, my senses were heightened even further and I actually began to cast glances at Mrs Mansfield when she was at our place. Previously, I had always acknowledged her but not paid any ATTENTION, as she was mostly there to socialise with my mother but now, I was curious, engaged and wanting (if at all possible) to know and see more.
I was pretty sure that she was not aware that I had seen what I had seen and more specifically, the impact it had on me.
Occasionally now, I would "sit in" with my mother and Mrs Mansfield when she visited, engaging in some minor conversation and hoping beyond hope that I could see more, or see her bend over in front of me again or maybe...just maybe...catch a brief but "accidental" glimpse up her skirt. She was after all, sitting in front of us with that white nurse's skirt riding just above knee height when she was seated. I felt like just a swivel or leg movement in a certain direction could provide that "glimpse" as she was clearly bare-legged underneath and not wearing any pantyhose to speak of.
My real opportunity came along sometime later when I received an offer from Mrs Mansfield to housesit for a week whilst her family went on vacation.
Of course, I didn't hesitate for a moment and agreed to the offer.
By this time, even though I had already turned 19, I was still waiting on my first real sexual experience and it certainly felt a bit lame seeking sexual gratification by way of sneaking around trying to have interaction with an older married woman's underwear.
(Years later however, I realise what a true rite of passage this was for me and genuinely wish there had been more opportunities like this).
Eventually, the time came to housesit for Mrs Mansfield.
I stayed the night the first night and as easy as it may have seemed in my imagination, it was not so straight forward to just step right up and start rifling through Mrs Mansfield's private places.
Firstly, I had never done anything like this before, so I was effectively looking to break my "undy virginity". Secondly, as much as may not have wanted to admit it, I was truly apprehensive about what I might find if I did actually come across some of Mrs Mansfield's real-life undies.
Extreme trepidation and excitement all at once. My heart was absolutely pounding as I weighed up my options.
It took nearly a couple of hours of sitting, watching television and rehearsing my actions before I took them. I wished I had brought some of my porn magazines with me so I could at least see some women's vaginas, anuses and pubic hair as well as maybe read some horny dialogue and really get myself in the mood.
As it was, I was a little too petrified for anything other than talking myself into doing what I really wanted to do.
Finally, with my heart palpitations almost intolerable, I upped from the lounge and made way towards what I knew was Mrs Mansfield's bedroom.
This woman was a family friend who was married with two children and here I was about to start exploring her underwear. I had to put everything else aside and do it anyway.
Flicking the bedroom light on, I made way over towards the chest of drawers and started opening each one individually.
The first drawer was clearly female bras -- Mrs Mansfield's bras - which were all apparently white or off-white, most laced and a little frilly but of no overwhelming interest to me.
Next drawer down however was my paydirt. Mrs Mansfield's undies -- all there in multiple pairs -- and I immediately started running my fingers through them. I could see a combination of colours and styles -- white, off-white, some laced and little frilly like her bras, even some black cotton pairs -- but all basically in the full-backed brief style. Big woman's panties -- some may even say, "Granny Panties". I also had presence of mind enough to glimpse the tags inside the knickers and could see clearly that they were "Size 14".
Here was my first real-life experience of a grown woman's underpants. To see them, feel them and touch them with my own fingers was unbelievable!
I stood there for at least a minute or so, simply fondling these garments. Knowing that they belonged to my family friend Mrs Mansfield. A married woman with children in her forties who actually wore these real-life underpants on her body, covering her very private areas including her bottom and her vagina. And her pubic hair too, if she had some (which I hoped that she did!)
With my heart still racing and my hands now visibly shaking, I needed to take the next step on my journey of discovery and inspect the inside of Mrs Mansfield's underpants. This is what it was all about. If I wanted to learn more about Mrs Mansfield's vagina and her personal hygiene, then this was what I knew I needed to do.
Grabbing a pair of white cottons and lifting them from the drawer, I shook them a little so they unfurled into their natural form, holding them outwards by the elastic waistband and admiring the shape of them.
I looked at them from the back first, ogling the full-back which I knew covered Mrs Mansfield's wide bottom as she wore them.
Once I turned them around though to look at them from the front, I now felt my erection growing quickly inside my pants as I looked at the full-frontal "frontispiece" of Mrs Mansfield's big underpants. I could see how the large front would cover her pubic area and maybe part of her belly but most importantly ran my eyes down to where the underpants would go down in between her legs when she was wearing them.
