Something I wrote up a while ago for  mirina for a commission for  maxcooldown (Link to original post, she's an amazing artist <3: http://www.furaffinity.net/view/18772742/ )

Sorry for not posting much recently, IRL has gotten in the way and made it impossible to write ;v; Though will try and force myself to get something done soon! Hopefully there won't be many more 2 month gaps between stories @w@;;

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A dead silence crept through the dark hut. The residing witch had left temporarily, presumably to gather more ingredients. Creaking open the ancient door was Max, a thick kangaroo girl. Thick thighs, muscular core and impressive chest, she had always had an interest in the witch's dealings. Observing the hut from afar, Max had seen countless of the witch's experiments, usually ending in the witch being a few (dozen) pounds heavier than before. With growing and gaining being one of Max's top interests, she was extremely curious and excited by the witch. Though being a bit shy (as well as nervous), she was never sure how or even IF to approach the wobbly wiccan. However, now that the witch was out, Max wanted to take this opportunity to explore the secrets that the witch had up her fat sleeves.

The hut was completely illuminated, though the neon from the various potions provided just enough visibility for the large roo to manoeuvre around. Each of the bright vials were labeled for different effects. 'Breast Growth, Were-beast Transformation, Hypnotism...', they all looked so inticing to try. Though the one that had really caught Max's eye, was a large glass vial full of a strange green goop that seemed to move and glisten. Carefully removing it off the shelf, Max stared through the translucent liquid. The label read "Goo (Lime flavoured!)". Popping the cork top off, Max put her nose over the lip to smell the substance. Certainly smelled like lime, though she wasn't entirely confident about whether it was truly edible... Before she could set the vial back down, it began to wobble and shake violently. Max tried her hardest to keep her paws around the neck of the bottle. Suddenly, it jerked itself towards the roof, taking her arms with it and stretching them to their limits. After it reached its peak, the bottle forced its bottom forwards, causing the lip to tip back and pour the goo all over the roo, covering her snout and cleavage. Licking her lips, Max finally got a taste of the strange slime. To her, it was like the best green Jell-o she had ever tasted. Before she had another chance to move her tongue or her paws to get even more of the goop in her maw, she tasted lime again. And more lime. And more lime. And more slime. Wait a second, more slime? Max felt a mix of shock and confusion, until she realised. This goop was sentient, and it loved feeding its friends.

Max felt herself growing out, her musclar and toned frame losing definition. Biceps turning to pudgy arms, strong lower body turning into plush thunder thighs that wobbled with every movement and hard abs turning into soft flab. Placing her paws over her belly, she grabbed at its sides as it continued to push out, straining the poor seams on her shorts. Initially she felt worried that the witch would find her tampering with potions, though those thoughts washed away with the immense pleasure of the delicious goo mixed with the heavy feeling of growing. The goo pushed itself in between her increasingly chubby cheeks, eager to fill out her form. Max's butt had rounded out nicely, swallowing her tight red shorts. Her chest was already testing the limits of her shirt, though now the black fabric was hanging on for dear life. The goo loved playing with its latest victim, resting comfortably in the roo's cleavage as it waited to grow her out even more. Rubbing, bouncing and grabbing every inch she could, Max was very much enjoying her new form. As she grew heavier and as the experience began to fog up her thoughts, her legs started to grow weak. Falling back onto her plump rump, she sat and waited to become massive.

*UUOOOOOAAAAAAARP* Max belched, patting her gut. After an hour of endless feeding, she was absolutely stuffed and absolutely massive. Her belly sprawled out in front of her, the heavy gut forcing her thighs to spread out. Her fat ass provided a very comfy seat, both cheeks as soft (and big) as beanbag chairs. Her boobs rounded out on front of her, resting on her belly and threatening to start blocking her vision should she grow any bigger. Max sat there in complete contentment, exploring her new massive body. Snuggling into her fat, she felt like drifting off into a slime coma. Though jolting her back to reality was the sound of the witch hut door opening, and in waddling the obese witch. Max was petrified, she had completely forgotten about the hut's original habitant. The witch was surprised to see an 800+lb nearly naked roo girl on her floor, though her expression of surprise quickly turned into one of interest and playfulness. The witch removed her robes, revealing her fat and curvy body. "My my, what do we have here?~" she cooed, swaying her wide hips with easy step she took towards Max. "Looks like someone was curious. If you're that interested in magic, you could always help me test my potions! The results will definitely start /growing/ on you~ <3"