Bud M and I were at the beach this weekend. We had just gotten back from a long bike ride and were rushing to get ready to meet some friends for dinner. My lust factor was in overdrive because the last few miles of our trip M had been riding in front of me and the site of her big, round bubble butt, packed into her tight, black Capri pants, swishing back and forth in front of me was really too much. As if that sight itself wasn't enough to drive me crazy, I kept imagining her riding in just a skimpy black thong, her big, white globes shimmying up and down, glistening with exertion in the hot sun. When we pulled up to where we'd parked the car, my head was swimming with desire. The site of her, all rosy and sweaty from the exercise and the sunshine, her boobs straining against her tank top as she caught her breath, a thin stripe of soft, round belly peaking out above her waist, was really driving me wild. I was very unhappy that we'd brought our friend B along with us. It was near impossible to keep up my end of the conversation on the way home, my cock was rock hard and was struggling to burst free of my pants. I was thrilled to drop B off and speed back to our place. No sooner were we in the door then M was headed to the shower to get ready. "Wait," I said. She turned to me, a puzzled look on her face. "What?" "I need your ass for 60 seconds." She knows I don't use the word "need" lightly. She sighed and said "Sure, why not?" a slightly begrudging look on her face. That made it all the hotter for me. There's nothing wrong with someone doing something *for* you. I have no problem with being indulged. It took her a second to wiggle out of her pants, her skin still sticky from all the exercise. I was pleased, but not surprised, to discover that she wasn't wearing any underwear. I told her to leave her cute, rose halter on. I love the way that a girl with just her top on emphasizes that her bottom is bare. I told her to climb up on the bed and she did, lying down on her stomach, facing away from me. She looked back at me playfully. I told her to stick her ass in the air and she did. Teasingly, she positioned herself so as to keep her butt cheeks closed to me. "C'mon, you know what I want." I lowered my face down to within inches of her ass and she arched her back. The sight of her big, juicy cheeks slowly spreading in front of my eyes, her sweaty buns gradually coming unstuck from each other, was truly magnificent. There is something about a girl willingly displaying her asshole for my pleasure that never fails to set me on fire with lust and this time was no exception. My body involuntarily shuddered with desire as her pink and brown rosebud came into view, the fine hair of her buttcrack damp with perspiration. If my cock was hard from the sight of her dirty little browneye winking at me from between her luscious buns, I thought it would practically explode when I caught the first whiff of the filthy, musky smell that came wafting out from her sweaty asscrack. I don't know what it is about how I'm wired, but there's something about a nosefull of female ass scent that literally makes me dizzy with lust. I actually get so turned on that I feel drunk and giddy. It's like the high from the most amazing drug you've ever tried washing over you in one second flat. As if the physical reaction her scent caused in me wasn't enough, the psychological impact was pushing my arousal into total overdrive. This was the first time I'd had a chance to sniff M's ass when it was quite so ripe. It was also the first time that she knew exactly what I was doing and why I wanted to do it then. She's always known about my obsession with her ass, but had always made an effort to be clean before indulging my appetites. Just a few days before, under the truth-serum effects of Ecstasy, I had told her for the first time that the smell was a huge part of the turn on and if it had been a while since her last shower, all the better. Up until the very moment she thrust her sweaty, smelly ass in my face, I had been regretting the "confession." I feared it might make her more self-conscious about the possible scent of her butt and that I might miss out on the occasional dirty whiff due to increased hygienic vigilance. Man was I pleased that this didn't turn out to be the case. So there she was, face down, ass up, cheeks spread, her dirty hole and sweaty crack just inches away from my face, fully aware that I was sniffing her butthole, that I was doing it *because* it was extra dirty and smelly right then, and she was *letting* me do it. I can't think of anything hotter than the wanton shamelessness of a girl letting you sniff the dirtiest, most private, most shameful part of her body. The whole thing was such a wonderful combination of submission and loving indulgence that I could hardly stand it. I barely had to lay a hand on my cock before I was blowing one of the biggest, hardest loads I could remember. It took me a long time to come down from the physical and mental rush of that experience. Our friends must have thought I'd had a few tokes before arriving at dinner that night. Little did they know it wasn't weed that I had inhaled to get high, but rather the filthy sweet aroma of M's big, juicy ass.