Lexi was bored, really bored. Her days off from work were a nice time for rest but this particular season left her with nothing much to do. That fact that her closest friend and roommate seemed dead set on sleeping until 3pm meant that she spent most of the first half of the day daydreaming stuff to do once her friend finally woke up.

Right about then Lexi heard some pretty heavy footsteps coming down the stairs. A tired fat deer whod finally woken up stumbled slightly into the room and sat down in the chair next to Lexi.

"Morning there Lucy!" Lexi finally perked up a bit from her boredom.

"H-hey. How are you?" Lucy mumbled quietly, still sorta waking up.
"Oh I'm just fine. A little bored but now that you're here that shouldnt be a problem. In fact... I have something I wanna do with you"

"Oh yeah? What might that be" Lucy seemed mostly awake by now as she showed clear interest in Lexis idea.

"Well..." Lexi pulled out two small vials from her pocket, both labelled with writing Lucy couldnt read from where she was sitting. "I thought itd be fun to play around with transformation potions! In small doses they're more like minor, relaxing changes rather than anything extreme." 

Lexi tosses a vial at Lucy which hits her belly before Lucy grabs it. Lucy stares at it as she reads "blueberry transformation, drink up till marked line for recreational use, amount needed may vary" 

"Blueberry?" Lucy said, slightly confused

"Well recreationally itll just make you blue and really cooled down, which is pretty nice when it's hot out" Lexi explained.

"Hmmm... alright I guess I'll try it" Lucy replies as she begins to remove the cap from the vial.

"Just remember to drink to the marked line and not past it" Lexi, being ahead of Lucy, has already drank the recommended amount and is relaxing back.

"Yeah yeah, I get it" Lucy drinks about the same amount as Lexi and tries to relax too.

After a short time, Lexi begins to turn blue, starting with her nose, spreading down to her hands and all over, before she finally becomes entirely blue. She looks rather calm and relaxed while her friend had remained completely normal, not changed at all from the potion.

"Oh gosh this feels great, I dont notice this heat at all anymore... How about you?" Lexi is too leaned back to even notice Lucy's lack of change.

"I'm getting nothing! Are you sure this small dose is the right amount for a person my uh... size?"

"Aww c'mon Lucy you really think you need more cause you're fat? I doubt it just be patient" Lexi tries to calm Lucy down.

"I'm pretty sure that's it, it said amount can vary here I'll just do a little more" Lucy tips the vial back into her mouth and drinks a second recommended dosage. She sets the vial aside and hopes itll work better this time.

After another small wait, Lucy begins to turn blue as well, oddly quicker than Lexi did but she seems fine with it.

"Oh wow you're right this is very cooling... I feel pretty full though hehe..." Lucy seems to trail off thinking out loud at the end of her sentence.

"Full? I dont feel full. Just cool. You uh, sure you didnt drink too much" Lexi starts to look up at Lucy to make sure nothings wrong.

About then Lucy is given quite the surprise when her mid section starts to expand. She's.... growing, swelling even.

"Oh my gosh Lucy get up you're getting big!" Lexi calls out.

Lucy gets out of the chair and is led by Lexi into the middle of their spacious living room. She continues to swell. Her face gets more bloated and fat looking. Her belly doesnt stop sloshing with juice. Her arms and legs become useless as her body is expanded out into a spherical shape. She swells until shes a totally round 8 foot tall blueberry.

"Ahhh!!! What happened to me?" Lucy yells in shock.

"Well... you drank too much of a blueberry transformation potion so you uh... transformed into well, you can guess." Lexi explains, starting to have a teasing smile on her face as she looks at the adorably huge deer before her. 

"What do we do then?" The blue deer whines.

"Hmmm... does this feel good at all? Cause yknow I could roll you into an even more empty space and uh... make you bigger." Lexi teases.

Lucy is taken aback a bit by Lexis sudden change in tone. As much as she wants to fight it and get her old shape back the idea of getting bigger makes her too curious to reject. 

"Uh... well I uh, I-I'd like to try that I guess" Lucy stammers out, tripping all over her own words.

Lexi grabs the vials and puts them in her pocket. She begins to roll Lucy into the empty room, Lucy cant help but softly whine and moan every time shes pressed into with Lexis relatively gentle hands. Every time shes reminded of her current shape her face goes totally red. Well... purple at this point.

They arrived in their giant empty space, a room Lexi had always planned to do something with and figured this would be a fine purpose. She climbs up onto Lucy and pours the remainder of the potion into her mouth. Lucy swells once more at a vastly accelerated rate. All the same changes to her face and limbs were simply added to while her breasts swelled up with juice. She grew, and grew, and grew until she finally stopped at a full 30 feet high.

"Oh-oh gosh! This might actually be too big!" Lucy was in complete shock.

"Oh? Is that so? You big blue blimp?" Lexi can't help but tease as she slides down to relax between Lucy's massive blue boobs.

"I feel like I might burst!" Lucy shouted in worry.

"Well just avoid sharp objects then! You'll be fine... I'm sure theres some way to turn you back. I don't actually know one but it's gotta be possible." Lexi was too relaxed and comfortable to worry about stuff like this.

Lucy began to settle down as she saw with what little vision radius she had how happy and relaxed her friend had become on top of her. She calmed for the moment and just hoped Lexi was right that she could be turned back... or at least that Lexi could accommodate such a huge blueberry if reversal wasnt possible.