The Worst Smell

What The?

"Are you KIDDING ME?! How in the hell are you even- OH, CHRIST." Despite having always been the usual person to deal with Rachel's diapers, the smell was nearly too much for even Holly to handle. She used both hands to cover her nose and mouth, her eyes tearing up from the sting of the odor. As she turned her head away, she could swear some of the flowers looked droopier and more dried out than they were before.

"Hnggg..."

Rachel continued her onslaught, shoving mound after mound of the toxic-smelling sludge into her protective padding. She kept pushing until the diaper seemed nearly half the weight and size of herself, now covering nearly the entirety of Holly's legs and making its way around her belly. At last, Holly felt the stream begin to slow down, until it ended with a deep, bubbly fart.

"Ahh... Hahhh..."

Rachel now appeared to be more diaper than girl. The once-white padding stained a darker brown than before, and it had blown out well beyond its intended limit. The mess had more than doubled its size, and it now stretched down just below the girl's knees. It had also morphed around her sister's belly, engulfing the sides of her abdomen and grazing her C-cup breasts.

Even through the smell, Holly couldn't help but be astounded. "What... what even is this?? You've made some big messes before, but this is something else entirely!"

"Yep! Haha!" The girl smiled again, seemingly immune to her own fumes.

"We gotta get you changed, like, right now. Come on, get up." Holly ushered the girl off of her legs, pressing her hands gently into the monstrous pile of filth. She left hand prints as Rachel came to her feet, letting the diaper flop down between the girl's legs. Standing up, the mound of mess sagged halfway down the girl's legs. It wobbled back and forth, much to her delight.

"Teehee!" Rachel giggled as she moved her hips back and forth, letting the heavy mess swing forward and backward like an oversized pendulum.

Holly sat for a minute to fully appreciate what her sister had just produced. How is this even possible? she thought. The mess is practically bigger than she is! Shrugging it off for the moment, she looked at her sister's face. "Come on, quit goofing around and let's go," she said. She began walking toward the street when she heard her sister struggling behind her.

"Unf... Nnff..." Rachel seemed unable to bear the weight of her own making, and after only three steps she leaned over, hands resting on her legs as she panted.

"Oh, don't be a drama queen," Holly said. But when she swiveled her head to look back, it was obvious why Rachel was struggling so much. The load she was lugging had to be close to the girl's own bodyweight. Which makes me question how in the hell she was walking when all of that was inside of her... Holly rolled her eyes and backtracked toward her sister. "Alright, come here stinker."