PART 1

It's 3:30 on a Friday afternoon and my last class for the week is just about to finish. I was never any good at school and I think all of my teachers have picked up on that by now. Although Ms. Dulvan usually gives me looks of disapproval, today she seems especially fixated on me. For the entire class she's been giving me a sort of devilish grin, but no one else is picking up on it. It feels like we're in our own world together and she's in control of it.

The bell finally rings, snapping me out of her gaze, and I start packing up. I look back over at Ms. Dulvan as I stand up and she is motioning for me to sit back down. I'm confused as I hadn't done anything noteworthy lately, good or bad. She still has that devilish grin on, which can only be bad for me. Over 5 or so minutes, everyone else exits the class, leaving just the teacher and I staring at each other.

"So... what's up?" I say timidly, somewhat put off by her demeanor. She gets up from her chair and slowly makes her way over to me. Ms. Dulvan is about 6' tall and heavy set. Her hips and chest are almost as wide as the aisles between the desks. Her midsection somewhat protrudes outward as well, but only proportionately to the rest of her body. As she walks towards me, she moves a few chairs and desks by accident with her large frame. I, being only 5'7" and 140 pounds, am a little intimidated by a woman of her stature. Now she is standing directly in front of my desk.

She leans over, her chest spilling forward inches from my face, and whispers, "If you sit still for the next 30 minutes and don't talk, I will give you an A+ in my class." I'm in shock. Never before has Ms. Dulvan shown me any leniency and now she offers up an easy grade? This has to be a trick, right? As I question the legitimacy of her offer, she goes to close the door and shut the blinds. She keeps glancing back at me with the same devilish grin as before. I open my mouth to say something, but she puts a finger over her mouth, suggesting that I be quiet. Oh right, part of the deal is not talking. I guess I'll go along with this for now, what's the worst that could happen, right?

Ms. Dulvan walks back over to me, her long light brown hair and hips swaying in tandem. She goes around to the back of my chair and pulls it out slightly from the desk. "See, I've been having some stomach issues lately. I always seem to have a lot of gas, but I can never let it out..." She walks back in front of me, this time between me and the desk. Her ass is hovering less than a foot from my face, only being held back by the tight skirt she's wearing. She looks back at me one more time with that grin of hers. She's not going to ... fart on me, right? What the hell's going on here? Clearly I'm not understanding something.

"Ms. Dul..." She quickly cuts me off, "Remember our deal, no talking, no moving." Since I need the grade, I keep quiet. Gradually, she lowers her ass down on me. It's so large that it engulfs some of my torso along with my lap. She's heavy, I mean, really heavy. It's not quite painful, but it is uncomfortable to have her on me. Even if I wanted to move, I wouldn't be able to. The fabric of her skirt is being tested by her massive frame and I can feel myself getting hard. These 2 factors combine to her skirt bending around my erection, sandwiching my cock between her cheeks. She moves back a little bit so that everything besides my face is covered by her ass. She looks back at me again with a strained look on her face.

"Sorry, I'm not feeling so good." I hear her stomach rumble. The vibration cause my whole body to shake. I don't like where this is going. I try to squirm out from under her, but there's no use. She has me pinned to the chair. "No...no....just stay right there...." As she finishes her sentence, I hear a hissing noise that slowly gets louder, and I feel my cock vibrate beneath her ass. A putrid, sulfurous smell hits me full force, my face being barely out from under her.

BRRRRRRPPPPT BRRRRRRRRRPT

The hissing noise crescendos into two deafening farts, filling the room with noxious, unbreathable air. I would cover my nose, but my hands are also under her massive ass. I thrash my head around, as it's the only part of me I can move. Ms. Dulvan looks back down at me, "What? You don't like my scent? Well, I guess this is going to be a long half hour then, huh?"

PART 2

I start gagging uncontrollably from the pungent aroma. In response, Ms. Dulvan laughs wickedly while releasing another fart, this one even grosser than the other two. At this point I'm getting nauseous, I don't know how much more of this I can take.

"Aww, poor thing! You look like you're gonna lose your lunch; well, we can't have that..." Ms. Dulvan gets up off of me, seductively shaking her thick thighs and ass while doing so. She pulls up her skirt to reveal blue satin panties. Most of the material is crammed between her ass cheeks, and all of it is soaking wet. Since there isn't any colored stain, it seems to all be sweat. I'm surprised with how much sweat there is that none of it shows through her skirt. My jaw drops at the sight of her monstrous ass, and my cock stiffens even more than from when she sat down on my lap. She takes off her panties, and holds them up for me to examine.

"See, I don't want you to throw up, and I still have more gas, so there's really only one solution..." Ms. Dulvan takes advantage of my open mouth and shoves her sweat-soaked panties deep inside it. My tongue gets most of the action as the inside of her undergarment grinds against my taste buds, leaving a bitter taste in my mouth. The sheer size of her panties forces my mouth open even wider. I try to close my mouth with force, but this only wrings out a portion of the sweat, making me swallow her vile fluids. I gag again, but nothing will come up because my mouth and throat are stuffed with her essence.

"Great! Now for the fun part!" Ms. Dulvan points her ass back towards me, and scoots back so that her bare ass is nearly touching my face. Without her panties in the way, sweat is oozing profusely from her crack. She reaches her hands back and spreads her cheeks, uncovering a foul, cheesy smell. Ms. Dulvan scoots back once again, ensuring that almost my entire head is in her ass. Just to make sure I can't escape, she places a hand on the back of my head. She then puts all of her strength into forcing my head deeper into her behind. My upper lip makes direct contact with her asshole, with my mouth still being held open by her panties.

I think I can hear her giggle to herself, but my hearing is obstructed by her massive behind. At this point I am in so much shock that I can't even think straight, let alone think of what to do next. I really am at the mercy of my teacher. "Here's a lesson in chemistry. What you're about to experience is what happens when you mix a 300 pound lactose-intolerant woman with a pound of chili cheese dip. Enjoy!"

BRRRRRPPPPPPPPPTPPPPPPPPPPPPPTTTTTTTTTTSSSHHHHSHHHHHHHHHH

Ms. Dulvan releases a catastrophic 10 second long fart, becoming more wet and rotten towards the end. In the last second a spurt of brown liquid shoots out from her asshole and directly into my OPEN MOUTH. The panties only serve to trap the liquid on my tongue. I try to thrash around, but my head is lodged deep between her cheeks. I try to cough, but her underwear doesn't allow for any air to pass through. The warm, putrid liquid is left to sit on my tongue. The smell can only be described as pure shit; nothing is comparable to it other than that.

"What's wrong, you didn't like my demonstration? Well, hopefully you'll be a little more receptive to this..."

BBBBBBBBBBBBBBBBBRRRRRRRRRRRRPPPPPPPPPPPPPPPPPPPPPPPTTTTTTTTT

BBBBBRRRRRRRRRRRRRRRRRRRPPPPPPPPPPPPTSHHSHHSSSSSSSSSHHHHHHH

BRRRRRSSSHHSSSSSSSSSSSSSHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

Just as I thought things couldn't get any worse, my teacher delivers a somehow more foul aroma directly into my nose, and even more brown liquid into my mouth. The liquid shoots out at such a high speed that it bypasses the undergarment and sticks directly to the back of my throat. If I could, I would throw up violently, but my throat is even more blocked now. The hairs in my nose are singed from the toxic fumes that I'm forced to sniff up. The fact that I haven't asphyxiated yet is a miracle, and more likely a curse.

"HAHAHA, I can feel things getting pretty gnarly back there. You must be drenched!" Ms. Dulvan begins grinding her ass up and down, smearing brown liquid and sweat across my face. I say grinding, but my face is stuck to her, so my head moves in tandem with her massive butt, almost lifting me out of my seat when she moves upwards.