As I sat on the cold, hard laboratory stool, I could feel the weight of the massive log pressing against my rectal walls. It had been three long days since I had last attempted to evacuate this massive load from my bowels, and it felt like a hot, heavy stone was wedged deep within me. The thought of how much it must weigh, how much it would stretch and fill me, sent shivers of anticipation down my spine.
I had been assigned to conduct an extensive analysis of this log by my boss, Dr. Skatt. She had warned me that this would not be an ordinary day at work, and she was right. Never before had I had to endure such long hours on the toilet, trying desperately to keep this beast contained. Even now, as I sat here in the lab, the overwhelming urge to release it all was almost unbearable. But I had a job to do, and I was determined to see it through.
I took a deep breath and leaned over to grab a pair of sterile latex gloves from the counter beside me. As I slipped them onto my hands, I could feel the tips of my fingers brushing against the warm, supple skin of my inner thighs. It was both unnerving and incredibly arousing, knowing that such a mass of fecal matter was buried deep within me.
Slowly, carefully, I reached back and positioned the hem of my lab coat, exposing my asshole to the cool air of the room. For a moment, I hesitated, wondering how much of the log was actually outside of me. I couldn't wait to find out.
Bracing myself, I began to push, slowly at first, then with more force as the pressure built up inside me. With a loud groan and a heavy thud, the massive log finally broke free from my body, landing with a wet, satisfying splat on the examination table in front of me.
It was even bigger than I had imagined! The oval mass was nearly the size of a small child, with ruddy, wrinkled folds that seemed to breathe on their own. The smell was overwhelming - a potent blend of sweat, desperation, and fecal matter that made me gag. But despite my initial revulsion, I found myself drawn to it, drawn to the power and intensity of this primal expression of my body.
I picked up a magnifying glass and studied the surface of the log, noticing the tiny flakes of skin and bits of hair that were embedded within it. I took a deep breath and plunged my hand into the cooling mass, feeling it cling to my fingers like wet cement. I pulled out a fistful, scrutinizing it under the bright lab lights, marveling at the intricate patterns and textures that make up this primal substance.
As I delved deeper into the analysis, I couldn't help but feel a strange mix of emotions. There was disgust, of course - the sheer size and weight of the log, the stench that filled the room, all of it was incredibly off-putting. But there was also an undeniable sense of pride and accomplishment, a satisfaction that came from pushing my body to its limits and maximizing its potential. And then, of course, there was the arousal - the thought of filling myself with so much shit, of being so utterly used and consumed by my own body, was more satisfying than any orgasm I had ever experienced.
By the end of the day, I was exhausted. My asshole throbbed and ached, my thighs were covered in a fine sheen of sweat, and my brain was fried from the intensity of the experience. But as I stumbled out of the lab, dazed and befuddled, I couldn't help but feel a sense of accomplishment. I had survived a massive, three-day log, and emerged from the other side stronger, more powerful, and more in tune with my own primal desires. And I couldn't wait to do it all over again.