Where to start really?
All night, I could feel and tell that I had to poop, but I refused myself from going. U c…. I wanted to make a mess of a pair of underwear instead. Believe you me, it wasn’t easy convincing everyone that I was okay, and that I didn’t have to poop. Unfortunately, I didn’t fool everybody.
Yeah, I skipped about a bit. At one point, I placed a an extra pair of underwear into my closet, preparing for it early. I was determined that I was going to poop in underpants. I even went as far as preparing an extra pair.
“Timmy, I know you must potty, so go now. It is bedtime.”
Said mom, as well. To the bathroom I went, but I wasn’t planning on using it. I sat for awhile, as I pretended I pooped. I then hurried back into my-room. This was something I had gotten good at doing. “I am finished, my bro can go next.” I hollered down the stairs. “That’s good Timmy, Jimmie is on his way up.”
Said mom, as Jimmie came up the stairs. Interesting growing up really… in a house with 4 boys, and no girls. Only two-of-us were actually family, and it wasn’t any of the other three boys. None-of-us were related to each other at-all. 2-of-us were fox, one red, one regular American brown fox… one of us was a wolf, and last but not least… one a half mix, something-or-other, and wolf. Kinda like a Mutt mixed wolf. Timmy? Myself? I am the red fox, and scent wise? I went to the vet, and they told me, they couldn’t totally remove the gland. So much for keeping from attracting females. I never want to, as I ended up totally gay, if that’s what you call it. Being 11 going on 12-years-old, I knew what it was already, when two boys to fool with each other. This night though, was all about me making a mess in my underwear. I needed to be extra cautious as I would be sneaking into the-closet later. I got myself into bed, and-then closed my eyes briefly. There came a knock on my door. “Yeah.” I answered. “It is your mom Tim, did you go to the bathroom?” She asked. “Yes mom I did.” I answered.
“Well you better hope so, I don’t want another incident like at Inkbunny’s place.” she said. “Don’t worry about that mom, we won’t.” I answered, as actually, that was the half truth. I laid there looking at the ceiling for a little while, hoping my mom would soon walk downstairs. An incident like last time, wasn’t going to happen, as I wasn’t going to be in bed this time. I saw the world go dark, and then quickly shook it off. I looked over at the clock. It was going on 12:50. I slept around 3 hours, and hardly knew it. I swung my foot-paws around, as well as my entire body, to be able to sit up on my bed. I looked about a bit, listening for any sound I could hear. I heard not a sound, as I stretched to place my 
foot-paws onto the carpet. I made a light thud, as I hit the floor. My heart jumped in my chest, as I was sure, it would wake someone up. My heart was pumping hard and fast, as I stood on my floor frozen where I stood. I had to jump down, cause I had the body size of a 6-year-old. My penis looked like that of a 4-year-old, but get it hard, it didn’t look like a 4-year-old’s penis 
any-longer. A-not it didn’t, as it had the appearance of an 8-year-old’s penis. Get it shooting it’s silky stuff, and you would think it was coming from an 18-year-old’s penis.

Heart still pounding in-my chest, I took a step forward, toward the closet, and one-step closer to the spare underwear, which I hung in the closet earlier, for doing just this. My paws were shaking, as I nervously took another step forward. As I did. Oh gawds, I had to cross my legs, as my poopy pressed against my anus. With my eyes tearing some, I stopped to just hold it in… sweat coming from my forehead… as I hadda pee too, but I was going-to 
hold-it-in. I took baby steps, farting slightly, as my poop pressed against my anus. I wasn’t about to let-it-out though, until the time when I wanted to. Pushing on further, I could feel pain in my gut, both from my bladder, and from my intestinal track. I felt my right paw down to my gut, and could actually feel a lump in it. I cried some more, not the kind-of crying which I make noise… but still a water-works, as goose-flesh was pimple-ing all over my arms and the nape of my neck. I farted again, as I was now half way between my bed, and my closet. I was now poring sweat, as my fur was getting matted down with my own mixture of water-works. My bowels suddenly let-up, as I could now walk instead of taking baby steps. I stopped crying, as the sweat was now uncomfortably cold, as it had cooled down a-bit.

Almost as soon as I touched the knob, my bowels pressed me so hard suddenly, that I was unsure if I held it back on-time. Standing crossing my legs, my sweat no longer felt cold, at least for the moment. The water-works returned to my eyes, as I wanted to howl out, I placed my left paw in my mouth, as I squealed into it. Goose-flesh returned, as I could feel pain in my anus… holding it in, near like my-life depended on it. I was holding my crouch with my right paw now, as I had let go of the closet door knob. I made a bumping sound, as I hit my head against the closet door. Now my heart was pounding again, as I was worried that someone heard it. Shaking all over, I let my head leaning against the door, as-I had goose-flesh probably up and down my entire body, possibly causing my fur to stand on end. My heart pumping hard and fast, it felt like time was passing really slooooooow. My words, felt like they were coming out like thiiiiis. As-sss, I he-e-e-e-ld my Pooooopy in tightly. “Come on come on, wa-wait ju-ju-just a little longer.” I whispered, as I had removed my left paw from my mouth. I moved it to the seat of my underwear, and then pressed up and then in.

And then just as suddenly as it had started, it stopped, and gave me at least somewhat of a break. I went to let go of my crouch, and then peed myself slightly. Since that I had only peed myself slightly, I still reached my right paw up to the closet’s door knob, and then gave it a twist. The door swung in, as I took fast steps into the closet. Moving past the door, I swung it shut fast, all the way until just before the latch would go over… and then I stopped cold. And then… I turned the knob from the inside, and slowly pressed the door shut the rest of the way. I leaned nearly my entire body against the door, as I was sure my intestines were gonna press me again… low and behold… I was correct, as I crossed my legs from inside the closet, leaning on the door. My spare underwear were just above my head, as it wasn’t going to be very difficult to reach them. The water-works and everything started back up again. “Just a few more moments, that’s all,… c-mon.”
I groaned and grunted, holding my poopy in… and then just as suddenly as it started, it stopped again.

I wasted no time to strip off my PJ’s and underwear, and then hung them up, as I lifted up my spare underwear, and then let them fall on the floor at my foot-paws. Placing my pajamas on the hook in place of my spare underwear. I wasted no time placing the spare underwear on either. Not a moment too soon, as my bowels began to press again… this time, I only tried to hold it back with about half as much effort. I cried a bit, as a chunk made my underpants. I reached my left paw between my legs, and then felt the lump in my underpants, as my bladder was now bugging me more then it had been. I walked toward my pile of plushies, and then as I did, I pulled my penis from the button fly on my underpants. I grunted a little, as I squirted a stream onto the plushie pile. My anus hurt some, as my poop was trying to come from my anus. I held it in, as I fiddled with my penis a bit. And then squirted on the plushies some more. The goal is, to poop enough to turn on my crouch to spit it’s sweet sweet milk. I pressed to poop, and then my body started taking over, as I pulled back, preventing my body from being able to release. I wanted to poop my underpants further, but I wasn’t gonna make it easy for my body to do so. I placed the fingers of my right paw into my underwear, and then to my anus, as I wanted to feel where my poop was. I could feel the first clump, as my body had stopped pressing at me by this point. I waited on my body this time, as I knew it would be pressing me at any moment.

I only haada wait a few moments, as my body started pressing at me again. I let so much out, and then pressed into it with my paw, as I masturbated with my other paw. My right paw behind me, and in my underwear, my left, masturbating my penis. I squirted, as I was erect, piss on the plushies… as if I let my poop go a little further, I would poop into my paw. I grabbed at my poop, and then painfully broke a piece off, as my body was soon done pushing. I again waited, as I pulled my right paw from my underwear, and then replaced it with my left paw. I mashed my poop over my penis, and then proceeded to use it as lubrication to masturbate.
I let it drop onto carpet samples in the closet, not worrying about the mess I was making. My body wasn’t pressing any longer, so I had to do the pushing for it. I pressed hard enough, that I could feel the broke off piece. “Ohh gawds Fuck-it.” I said aloud, and then brought my paw back outa my underwear. I placed some pleasurable pressure into my balls with my left paw, as I masturbating with my right, and then pressed to poop… not worrying about how much I might poop. One inch, two, three four.
I pooped my underwear so full, they were near ready to fall off of me. Feeling the mess against my anus, turned me on further, as I masturbated faster. I peed a little, hitting a mixture of my plushies, as I also groaned. The dirty feel of my poop, just made me even more horny. I could feel tingles working down my spine, as I pressed to poop, and actually managed to press out some loose stuff. My underwear were sagging, as I closed my eyes, and then masturbated even faster. Whimpering moans were escaping my mouth, as I knew I was going to spit my load soon. I tried to poop, but found, farts were the only thing I could achieve. Suddenly, my orgasm peaked, and I spit my wad all over my plushies. Some on this bear, some on that one. I spit it on a mixture of 4 of my 24 plushies. I spit about 8 tablespoons worth, as my load was 4 in a row.

Panting, I pulled my underwear down, and then let them hit the floor at my ankles. I carefully stepped out of them, and then took steps backwards. I made a mess of a carpet sample, it would be pretty difficult to clean it up. My underwear could be carried from the closet, and then dumped into the toilet. I placed on only the underwear of my other outfit, and then picked up the underwear which I had filled with my poop. I snuck to the bathroom, carrying my underpants to the bathroom. I nervously dumped the poop from them. I then worked on cleaning my anus. I was so dirty, that it was amazing I didn’t track my shit to the bathroom. Next was trying to clean the carpet sample. I partly folded the sides, and then carried it to the bathroom. I was able to dump my poop off of the carpet sample. I replaced it, but with poop stains remaining. My eyes were falling closed by this point, so I got myself into bed.

(FIN!)

The End?
I never do know, till I find out later, whether or not I feel like writing another-one.