Initially, I just thought about us hugging and kissing intimately, which quickly escalated to her allowing me to undress her and then leading to my "ideal imagery" of Leonie which was her stripped down to just her big, womanly white granny pants and then exposing her enormous breasts, dangling off her chest and her giving me full access to them.
Various scenarios based on this "ideal" would play out -- I particularly enjoyed the variation in which I pictured 63-year-old Leonie sitting semi-naked on the toilet with her large panties covering her hips, bum and nether regions and those gigantic, prominent breasts of hers hanging large, milky and tender.
From here, it was not difficult to imagine Leonie pulling those same big white panties down around her knees and doing a long wee in front of me -- allowing me to hear the feminine hiss of the urine leaving her body and spraying into the toilet beneath -- opening her legs and allowing me down close to smell the wee as it left her body and then wiping her vagina with white toilet paper.
My favourite fantasy however was one where I was luxuriating in Leonie's bathroom while Leonie was out at work, having acquired several pairs of her big, soiled underpants from either the washer or laundry hamper - and maybe if I had been extremely lucky, some of her used pantyliners out of the trash!
I would set myself up, sitting naked on Leonie's white toilet seat and carefully unfurling her big, dirty undies, one by one. I found all of Leonie's big underpants to be stained quite heavily and naturally very smelly between the legs. I imagined all of Leonie's crotch panels to be large and wide -- big enough to take quite a large or thick pantyliner and as well as cover what I imagined to be her large and hairy vulva.
With her big panties in my hand, I would place the first pair under the head of my penis, which was by now, very erect and veiny. I would then gently start to stroke the soft crotch panel of Leonie's underpants under my penis -- feeling how soft and tender it was under my penis and also how stained from her vagina it was. I just sat there inspecting it -- seeing how the stained white cotton looked under my thick, pink cock. I imagined Leonie's large, moist, hairy vagina wide open inside her underpants, rubbing the inside of this soft cotton gusset and staining it so heavily with sweat, pee and her smelly pussy discharge.
At this point, I would add a second pair of Leonie's large undies around my cock -- this time with the second stained gusset on top so that both vaginal surfaces of Leonie's knickers were touching my cock -- so softly, so gently. That second pair of her panties felt even softer around my cock and with such gentle stroking, my mind really began to wander -- knowing that both these soft pairs of underpants had been between Leonie's legs for extended periods of time, that all the staining and discoloration had come directly from inside her smelly, mature vagina probably with pee also dripping out of her wide-open urethra.
I began vividly imagining Leonie going to the toilet in front of me with her tremendously huge breasts dangling and fully exposed, her big knickers around her knees and legs open over the toilet with her plump belly sitting over the top of her hair-covered mons which was directly positioned over the toilet bowl. I stroked my cock even more firmly as I imagined Leonie graphically urinating in front of me and then reaching down between her legs to wipe her vagina clean with white toilet paper.
I REALLY began to stroke my cock now as I imagined Leonie placing her hand with the toilet paper down in amongst her triangle of pubic hair and taking time to wipe her big vagina so tenderly after toileting.
I could easily come hard at this point of watching Leonie wiping her big, hairy vagina in front of me but I wanted to edge myself even more and hopefully intensify the climax.
By now adding and third pair of Leonie's large knickers around my penis, it felt softer than ever and to have THREE pairs of a woman's used underpants around my thick, engorged penis was so VERY vaginal - to have all three contact surfaces of her crotch panels touching my penis like this.
I would also take the time to lovingly run my fingers sensually along each of Leonie's stained crotch panels -- physically touching where her smelly vagina had been, probably for many hours at a time during a typically busy day for Leonie.
"God, your underpants are SO soft Leonie!!" I thought to myself, "So soft. So tender and your vagina has made them so dirty on the inside. All that discharge. All that sweat. All that dripping pee during the day. All that creamy feminine smegma that your vagina discharges so freely into the gusset of your knickers."
With the fourth pair of Leonie's underpants, I also wanted to indulge her vaginal odour as I jerked off so tenderly with her soft cotton granny pants. Putting the gusset of the fourth pair to my nose, with the three primary pairs wrapped around my penis I inhaled deeply from the surface of her soiled crotch pad.
Here my imagination would take off even further -- creating whatever type of vaginal odour cocktail that I could ever dream of. Not only smelling Leonie's big crotch pad but also licking along its surface. Already with the softness of three pairs of Leonie's underpants masturbating my very hard penis, the intensity her feminine odour was what would almost certainly bring me to orgasm.
I imagined every possible combination of Leonie's unwashed fanny odour that could make me come -- the sweet and sour tang of pubic hair sweat from both her mons and vulva, the stale, acrid smell of her wee, the musk and very possible fishiness from her smegma discharge. All this combined with her natural body chemistry which would almost certainly have been enhanced by her perfume and skin moisturiser allowed me to "mix and match" whatever odour of Leonie's it was that turned me on so.