She couldn't tell whether she had awoken in the middle of the night, or if she'd simply laid there tired and restless all night. Either way, it didn't matter. She could never figure out why, but her libido always seemed to come alive, unhinged even, if she found herself awake this late.

	The little sand-furred mouse lay curled up on her bed, her limbs all wrapped tightly around a body pillow in a full-body hug, her tail curled tightly between her legs. She wore a large, loose orange tee, bearing a cracked and faded red panda chibi, and a pair of mint green panties with a Y-fly and elastic bands of pale blue. Underneath the loose blanket, her legs began to loosen and tense up, gently pressing herself against her pillow. She began to allow her thoughts to take over, knowing that restful sleep would only come to her after her body had exhausted itself in pleasure. She knew better than to try and stop it.

	Her mind wandered first to her girlfriend Cath. She imagined the buxom fox sleeping in the nude, the two entangled in an embrace. She imagined the vixen teasing her, pressing the thigh between the mouse's legs up against the warmth radiating from her pastel panties. As she rubbed herself on the pillow, she sent pulses of tension through her tail, pressing from her little ass up between her legs. Doing so did more than just arouse her though; she began to realize her body had more simple needs to attend to. Needs that had likely been the real cause of her awakening, and that were now becoming even greater fuel for her arousal. Pressing with the base of her tail, she felt now how she needed badly to relieve herself. She'd been trying to hold it more lately; though she did not get to play often, she wanted her body to get used to the routine so she would be ready when the moment arose.

	But she had underestimated her libido. She was awake now, and there was little she could do to stop herself. Reaching a paw down her front, the other still clutching the pillow tightly, she felt herself begin to quiver in anticipation. Did she really want to do this? She had always played with herself in the bathroom, with an empty house. The thought was banished in an instant, drowned out instead by pleasure as she found herself needy, unable to stop herself from continuing to deliver regular pulses with her tail. She bit her lip, trying to keep quiet. Forcing her tail to stop, she squeezed hard, but found her body unwilling to comply.

	"You need this," she whispered softly, rubbing her tummy slowly, trying to talk her body into relieving the building pressure. In the absence of her tail, her paw began to lift her shirt, tucking her fingertips below the waistband of her panties. "I...I need this." Her clit was so swollen she could feel the pulsing without even parting her labia, her fingertips gently pressing the dry fur just above her slit. "C-calm down Chelse," she panted to herself, gently alleviating the pressure of her fingertips. "You know you won't be able to go if you're all shaky and tense like this."

	It took her several minutes of shivering intensely beneath the blanket, wrapped up tight as if she were freezing, as she tried to trick her body into loosening up. Finally, she felt her body begin to loosen, her shivers fading. Still, she sat there, waiting until fatigue began to overtake her eyes. Her arousal refused to let her sleep, but her body was now ready. She wanted to try it right here, curled up under her nice, soft blanket, her pillow between her thighs. She was going to shit herself right on her unprotected bed.

	She didn't even think about changing into her messing panties, or even a pair of period panties. She wouldn't have cared if the thought had crossed her mind anyway. Keeping her eyes closed gently, she relaxed her hold on her pillow, allowing tension only where her body needed it.

	There was a soft hiss as she began, followed by a soft crackling. She felt her poop press against the fabric of her panties, creating a tightness that threatened to stop her mess from expanding, until her soft stool gave way, spreading out across the soft, pale fur on her ass. Gravity helped as her poop began to slide down across her right cheek. By this point her paw was already firmly between her legs, rubbing herself furiously through the dampening fabric as her grool drizzled into her gusset. She hardly even noticed when, with a push, her panties blew out, the leg band lifting from her body as her mudslide oozed onto the bed. It was only when a small pile began to accumulate, the warmth spreading to coat her entire cheek, both inside and out, that she took notice of the damage she was doing. Gasping, she blushed deeply to herself. She was still so aroused, and she had so much left. She couldn't stop now. Would it stain? Would it be noticeable? Could she clean it?

	Those thoughts came to her not as rational questions, but rather naughty challenges, teasing her. She was being such a bad girl, pooping herself on purpose, in her big-girl panties, and right in her bed too! All over her unprotected bed. Still, she didn't want to completely ruin her bed; she'd get in trouble and not be able to play anymore! That, and she wanted to keep it to herself. Her panties may have blown out, but they weren't full yet! And she intended to change that....

	Crawling up onto all fours, she tossed off her blanket, and her shirt. With some effort, she managed to find the perfect angle to continue. Squeezing a bit too hard, her poop forced her muddy panties away from her matted fur, more noisily this time as her seat filled up. Her panties grew damp, followed by a warmth and a ticklish sensation running down her thighs, followed shortly by a dull pattering on her sheets. She had pushed herself too far to hold her bladder. Hanging her head, she panted, giving up on hiding her mess. She now proudly pushed, filling her panties with a load of smooth, greasy shit, now mingling with a waterfall of musky piss, no doubt running in a brown streams into her sheets and staining her thighs. Her panties were beyond saving, yet still she pushed, holding her panties up with her tail to prevent them from sagging. Her panties began to stretch, but her mess expanded faster, reaching the base of her tail before her panties began to sag. Had she not been so engulfed in ecstasy, she would have been amazed at her capacity. Her poop began to run towards the gusset of her panties, the tension on her tail growing before her panties finally gave in, her shit beginning to splatter onto her sheets through the leg holes.

	She was unable to hold herself back from orgasm any longer. She clutched her pillow, pulling it between her legs, turning it so the seam slid easily against her camel toe. She began to hump her pillow, unable to see the coffee-colored stains she was leaving on her pillow case. She imagined the fuzzy pillow once more to be her girlfriend. If only she knew; if she knew how much this turned her on, how much she wanted to do this and so much more. Cath was always so good at teasing; she would know just how to make the little mouse squeal.

	"Gosh, what a messy little mouse," she would say. "Look at you, pooping your panties like a good little pinky. Filling those cute little panties until they can't hold it any more, ruining your bed sheets. Gosh, what would your Mommy think?" She would press her thigh into Chelse's crotch, pressing her mess right into her pussy, then pull her close. "Or do you like pooping right on Mommy's lap~?" She would bite the little mouse's ear, or perhaps her neck, whichever was closer. Maybe she would rip a hole in the mouse's panties, tease her filthy fur with her ticklish claws, then destroy her panties and let her shit right onto her fluffy fox fur. The fantasy raced through her mind at lightning speed as she humped her pillow more desperately, bearing her hips down against her pillow. Her poop continued to smear out the leg holes of her panties onto her inner thighs and onto the pillow.

	As her thoughts continued to race, her slick, warm mess began to make her skin tingle, her arousal only growing as she felt the beginnings of a rash. Leaning back, pressing her mess right against her pillow, making her poop smear out of her panties' tail hole and waistband and all over the fuzzy pillowcase, she felt her climax finally building. Her eyes closed tightly, shutting out the dim light of her room entirely as her body began to loosen and tense up in rhythm, her thighs clutching her pillow tightly as she squirted right into the soft cushion. She was unable to hold back a squeak as she felt the warmth pour from between her legs, warming her thighs once more and matting the fur on her thighs and pillow. She leaned forward, burying her head in her other pillow, pressing hard as she attempted to milk her orgasm.

	Even as her orgasm faded, her body demanded more. But first, a brief moment of consciousness told her to assess the damage. Flicking on the dim lamp next to her alarm clock, she gasped as she looked down between her legs at the bed. Her sheets had suffered layers of staining already, her piss creating a much wider puddle layers with darker stains where the streams of poopy liquid had run down her thighs. Her pillow's fuzzy case was smeared with thick shit, and piles of her mess lay on either side. Her first blowout was now underneath her pillow; she had rubbed it in when she had pulled the pillow between her legs. Her blanket had been tossed off her body, but only just; it lay crumpled at her ankles, the edge stained. Her panties, once pastel, now carried many different hues, even in the little bit of them she could see. She could only imagine what her backside looked like. How would she ever clean this up?

	The answer, of course, was that she simply wouldn't; or, at least, not right now. The sight of her bed completely ruined, her body pillow lying in a puddle of shit-darkened piss, smeared in her muddy excrement should have turned her off. But it was late at night, and her body craved the release of sex.

	She rolled over onto her back, laying in her puddle and feeling the warmth of her first pile smear against the outside of her panties. She cooed to herself, lifting her thighs as she peeled off her filthy panties. Pawwing for her mess in the dim light, she began to smear her shit all over her tingling pussy. She let out a moan as her other paw smeared a handful of her mess all the way up her thigh, up her belly, up to her breast. She pinched and fingered her nipple gently, then brought her fingers to her face as she continued to touch herself. Hesitating at first, she bit her finger to stop herself from waking her family, but then began to suck her finger clean. Moaning at her naughtiness, she continued to clean her entire paw before reaching for more, this time shoving her mouth full of her own filth. She forced herself to let it sit, to taste its bitterness, nearly gagging before forcing herself to swallow, all the while now fingering shit from her panties between the folds of her cunt, strings of brown grool dripping from her digits as her body begged for this.

	She continued to alternate between stuffing her mouth and smearing more on her body, squeezing her pussy to continually shit out and re-stuff herself, now beginning to alternate between her pussy and her ass as she became more aggressive. She ravaged herself with her massive mess, letting out another cry before catching herself. She was being far too noisy; too many moans had escaped her. She grabbed her shitty panties, still around her thighs, and began to tug, clawing for any seam or wrinkle. She didn't want to stop touching, not even long enough to remove her panties. Finally, her claws caught on the fly of her panties. Though it was sewn shut, the fly was loose enough to give her room to open it back up, tearing it apart right up the center with a noisy

rrrrrrrippp!

The garment came apart in her claws, tearing down the side across the front, separating the softer cotton on the front and side of the garment from the tougher elastic around her thigh and hips. Tugging hard, she attempted to rip a piece off; instead, her panties continued to rip noisily until the tear met the back of her gusset. Her panties tore nearly in half, splattering moisture and bits of mess over her fur in fetid freckles and no doubt dotting her bedsheets. Crumpling the remains of her panties into a ball, she stuffed them roughly into her mouth, making herself gag as the shredded fabric tickled the back of her throat. Sucking on the filthy fabric, she bit down, rubbing herself furiously to her second climax. Once again, she squirted hard, some hitting the remains of her panties and splashing like a hose, the rest spraying in an arc all over her blanket. Her filthy body pillow now rolled off the bed onto her pristine carpet as she came, completely unaware of anything but her pleasure. As her pussy contracted, she shit out all of the now runny filth she had stuffed inside herself, feeling it run down her taint and into the bed. Her loins tingled from arousal and rash, and through the gag of her panties she screamed in pleasure.

	Her body, now exhausted from sex and the early morning hours, began to lay still. Spitting out the gag, she found herself too tired to move, panting heavily as she laid on her back in a pool of her own filth. Unable to think clearly, to realize her dilemma, the mouse instead drifted off into a sound sleep.