The smell of dirty shitty ass that hasn't been washed in days, the smell of dirty worn-out clothing that has been baked in with butt funk, and the lingering smell of past farts, all these smells were overwhelming me.

I lay there, thinking to myself that this can’t be real, this had to be some sick nightmare, just there’s no way I could be here shrunk in the back of my son’s nasty underwear, this can’t be real. I tried hard to fool myself that none of this is real but unfortunately no matter how hard I tried, the smell of my son’s ass was just all too real for me to think otherwise.

I tried breaking free again but I eventually gave up. I was just too weak to break from this skid mark. It only seemed like I caused enough of a fuss for my son to think of me as a tiny itch, at least that’s what I thought because he started moving his ass up and down like he was trying to get rid of an itch. It wasn’t a pleasant experience but I did try moving around again in hopes that he would notice that something was in here. That was a big mistake because the next time he dealt with me, he took his fat fingers and started to dig up his ass. He only wedged me a bit deep into his half-wiped ass, I was still trapped but now I have shit smeared on me. I guess that’s what I get, he doesn’t even know that I’m here, let alone know that there’s a tiny man in his underwear, for all he knows that I was a simple tiny itch.

It felt like I had been enduring his giant ass for hours. Seemed like every couple of minutes he would let out a fart, they weren't as strong as the one he released earlier but they were still pretty intense. I’m guessing he was just casually letting out a bit of gas as he sits and plays on his computer, he’s just simply letting out small toots like it’s nothing, but for me, those toots are something else. It was already super hard for me to breathe since his cheeks are smothering me and giving off unbearable heat. When I did manage to suck in some air but it was nasty fart air. His farts smell like his lunch from earlier today, he had a few fast-food cheeseburgers with extra onions, my god I hated when he got those, those cheeseburgers always made his farts smell like shit with a strong onion smell mixed with it. It was bad when I was normal size, but now at this tiny size, strangely I kinda like it a little bit.

My mind was breaking down. At first, the only things I could think about were how much I hate it here, how much I wanted to escape, and how much I wanted to grow back to my original size. But then little intrusive thoughts started popping into my head, “This is normal”, “You never been big”, “You always been tiny”, “You always love the smell of farts”. My son’s farts were warping my mind… I tried to focus on who I am and my goal of escaping but as my son releases more farts, it only got harder for me to focus on what’s important to me.

It didn’t take me too long to give in to my thoughts and start questioning myself, my past, and my future. I started to forget that I was a 6ft tall man with a life, those memories were replaced with me just being a tiny 1/2 insignificant bug, actually no I wasn’t a bug, a bug has more meaning than me, I was just a skid mark in some underwear. Eventually, I stop even thinking of my son as my son, how could a skid mark like me make a being like that, I wasn’t a man, I was just shit suck in the back of his underwear. I saw him as this giant fat god that produces powerful nasty farts. Over time I even came to love his farts, with each fart that he pushed out, the more I came to love them, they gave me warmth, they gave me nutrients, and they give me pleasure.

For the rest of my life onwards, I stayed in my god’s underwear. My god did look for me for a little while, but eventually, he forgot about me. After all, I’m just a skid-mark.

………….

Earlier that day

Son’s Pov

I looked down into the toilet admiring my handiwork. 2 Big thick logs of shit, from a glance, that’s all they are but with a closer, you can see the tiny human bones that are sticking out from each turd. To think those guys were just normal size people a few hours ago until I shrank them and ate them with my food, I don’t even remember their names or why I shrank but all well. As soon as I shrank them, they lost all meaning to me, their shit now, I’m gonna forget about them as soon as they’re down the toilet. With that thought, I half wiped my ass, not caring if I get all the shit off, tossed it in the toilet, flushed it, and went on my way to my room.

I kinda sped walked back to my room, I didn’t have any underwear on and didn’t want my shitty dad to lose his shit if he sees me naked again. When I got there, I put on the first pair of underwear that I saw on the floor, they had noticeable skid marks on them but I didn’t care too much about that.

After I put them on, I noticed that my shrink ray was on the floor, I don’t remember leaving that on the floor, was my dad in here fucking with my shit again? Man, he gets on my nerves, told him some many times to stay out of my room. Should just shrink him down and stuff him up my ass to teach him a lesson but his my dad and people might notice him missing, I guess I just leave him be.

I crouched down to pick up my shrink ray but as soon as I did that, I accidentally let out a massive fart. I guess it must have been those guys I ate, or could had just been the extra onions. Good thing it’s just me here.