(XSSBHM, extreme/rapid weight gain, mobile blob)
"Mix four scoops with 16 fl oz of liquid. DO NOT EXCEED RECOMMENDED SERVING SIZE," it said on the side of the bottle. Yeah, sure... as if.
I wasn't interested in just getting a little bigger. I wanted to be fucking massive, and all the strongest, biggest guys always said that HyperGro mass gainer powder was the best way to do it. And now that I had it in my hands, there was nothing anybody could do to stop me from using as much as I wanted.
Also in the same box was my new 1 gallon water bottle, which I filled with water, tipping in the powder until I felt like it was enough, and mixed it in. I wasn't sure if I would actually finish the whole thing, but I had big goals and was going to give it my all.
I changed into some shorts and a tank top, and began my walk to the gym. I figured I might as well get used to it now, since it's only gonna get easier as I keep working out. I took a sip from my water bottle, and was surprised by how good the shake actually tasted. I couldn't help but drink more. I still had plenty left, and it wasn't like all that energy was going to magically disappear before I made it to the gym or anything.
Something started building in my stomach... It started off subtle, but got stronger and harder to ignore, forcing its way up my throat and out my mouth as a quick but loud burp... hope no one noticed that. I absentmindedly rubbed my midsection and kept walking.
Man, whatever's in this stuff is damn good. And imagining the body I was gonna have soon made it go down even easier. I was glad I made so much of it, since now it really did feel like I might drink the whole thing.
Once again, pressure began to build. The belch escaping my body was longer, and suddenly I felt a cool breeze on my... belly. My clothes felt tighter, and my shirt began to ride up the surface of my belly. Damn... it was already working this effectively? I didn't even mind that I was going to have to work this off. I was gonna be gigantic.
More of the shake down my throat. Another lengthy burp, watching my biceps grow bigger, and... feeling my underbelly hanging against my thighs. I don't think this was supposed to happen... But it felt so good to let loose and watch myself grow.
More. I tipped the bottle to my lips and started to chug. The strain in my stomach was sharp, and I let it keep increasing for as long as I could before opening my mouth and unleashing it. In an instant my belly ballooned down to the pavement, my moobs were hanging out the sides of my tank top, and my strong, powerful arms and legs were covered in a layer of thick, soft fat.
More. My belly was much bigger, and so was my will. I guzzled down more of the liquid, and the ground began to shake once all that air came echoing out of me. My clothes were shredded apart as my body exploded with mass, the remains pinned between my rolls. I was too wide to fit on the sidewalk anymore and my belly and ass began pooling off to either side. My dick was throbbing as my thick thighs pushed and shoved my fatpad around, and it was getting difficult to bring my arms to my face. I knew what I had to do.
MORE. I brought the bottle to my lips and opened my mouth, refusing to stop until every last drop was gone. My belly was churning and gurgling, trying its hardest to keep everything under control as I forced even more into it. I let go of the bottle and it tumbled down, past my chins, my moobs, and down my belly. And I rubbed my poor, stretched skin, ready for what was coming next.
BbwwuUUOoOOaAAAAUOOOOUUUUURRRRRRRRPPPPPPPP...!!!
Thousands upon thousands of pounds of fat assaulted my body, with my belly blimping up to the size of a house, smothering cars, bending the street lamps, and cracking the asphalt. My hands were pinned to my sides and then quickly engulfed by my wrists, and my feet suffered a similar fate. That plus the gigantic ass cheeks hanging off the back of my legs were not going to make walking easy. My head was sunken in the center of my body, surrounded by several bloated rings of fat.
I mustered up enough strength to walk, and my legs were caked in so much lard that I could barely even bend them. Kicking around my truck-sized fatpad under the weight of multiple tons of pure obesity made it hard to take a step without my dick leaking onto the street.
Not that it mattered anyway. I was more than big enough to occupy the whole thing. I could hear some cars piling up behind me, honking their horns. But I was too focused on walking to let them distract me. My lungs ached and my muscles burned every time one of my feet left the ground. I couldn't afford to pay attention to anything else. I had somewhere I needed to be.
Somewhere... what was I doing out here? I kept hauling my fatass down the street but I couldn't remember why... until I saw it! The gym... barely visible beyond my massive belly, which rolled into the parking lot and bulged around the cars. No way I was gonna fit in there anymore.
But honestly, who needs the gym anyway? I turned myself into a mountain of a man, and I didn't even need any overpriced equipment to get there. Sure, maybe I was never going to fit into my house ever again, but I had no regrets.
... Well, maybe one. I kinda wish I had dumped that whole jar into the bottle.
