You hear the bathroom door swing open and pull your head under the seat with the rest of your body, not wanting to be spotted by Andrew. After a moment you hear the door click shut, assuming Andrew is just trying to make it harder for you to escape unnoticed. You then hear a low, feminine sigh, one that couldn't belong to Andrew. You realized it was Barbara, which made your situation much more precarious. Before you could even think about what to do she'd already lifted the seat and sat down with a *whump*, not even bothering to look first. Now you were sealed in the relatively dark toilet faced with Barbara's bare asshole and unshaven sex directly above you. You covered your mouth with one hand, not wanting to accidentally breathe on Barbara and get her to notice you, as it was already a bit too late now to make yourself known without looking like a creep...
There was a brief silence as you sat in the dark under Barbara, the smell becoming gradually worse as the air was taken up by the smell of her butt. Your eyes darted up as you saw her asshole flex, praying she wasn't here for what you were thinking. Suddenly a gust of warm air rumbled from the older woman's butthole, making you nearly gag as it washed over you. Holding your breath, you struggled to keep calm as you heard her stomach rumble. Knowing what was most likely to come next you began to flatten yourself against the back of the bowl, trying to stay up above the water as you shimmied backwards. Another fart ripped from Barbara's asshole, earning a slightly disgusted "Ugh.." from her as it sloppily echoed in the toilet. You squeezed your eyes shut as you waited for the inevitable, time seeming to stretch on as you sat in suspense...
Punctuated by a loud bassy fart you heard it slide from Barbara's butthole before landing in the water with a plop. A bit of water splashed on you, but you were just happy not to be in the blast zone. Barbara continued to take her dump, sighing every now and then as she pushed her last meal into the toilet. More farts blasted into the bowl, becoming more and more wet as the woman let loose. It was hell for you as the small space filled with more waste and nasty air, your composure close to breaking as you tried to convince yourself you were somewhere else. You have a hard time hearing anything over the torrent of filth coming from Barbara but you're just able to hear a knock at the door in the haze of stink.
Just as faintly you hear Andrew's voice call out through the door. "Hey Mom is Jack in there? We're playing hide and seek and I can't find him.." He didn't sound too worried, more upset that he was losing. You honestly wish he had found you, as losing to him was much more bearable than what Barbara was currently subjecting you to. Barbara called back, having to try and hold it for a second, which didn't seem to work as more gas hissed from her tight pucker. "U-uh no honey, definitely not..." A loud fart shot from her asshole. Luckily Andrew was quick to trust his mother and ran off, letting Barbara get back to her business. "If Jackie was in here he'd have definitely passed out by now..." Barbara chuckled to herself.
Sadly for you you hadn't passed out, which if you weren't at risk of falling into the contaminated water you'd have surely wished for by now. It seemed like there was no end to the mom's bathroom break, the terrible atmosphere in the toilet bowl making you feel light headed. Barbara held her gut as she pushed her load into the toilet, straining as she let more waste and farts free into the bowl below. Finally after a long, grueling couple minutes Barbara lifted her hefty behind off the seat slightly as she wiped a few times, tossing the used sheets of paper haphazardly into the toilet. With a sigh she stood up, stretching her back as she did so, giving you a good view of her massive ass.
You wait in silence, the end in sight as the foul air begins to filter out into the rest of the room, no longer sealed in by the mother's doughy behind. Watching with intense concentration, you see her...