Author's Note: This challenge is a set of 30 prompts as proposed by bumbumshaky and fatlock on tumblr. I've been posting a new entry every day on my tumblr but will sometimes be uploading days as some are continuations of the previous days. Hope you enjoy!

The Challenge:

Day 1: What is your favourite fatlock pairing to fatten up?

Day 2: Who likes to fatten whom up?

Day 3: Mutual gaining?

Day 4: Measurement and weigh in.

Day 5: Tummy kisses.

Day 6: A fight (made up with sexy times and/or food)

Day 7: What about babies?

Day 8: How did the weight gain happen? (Suggested by one partner, by accident, for a case, etc.?)

Day 9: New set of clothes.

Day 10: A day of stuffing.

Day 11: Favourite food/s to stuff with?

Day 12: Trying on old clothes.

Day 13: Going out for the day.

Day 14: (Cute) nicknames for the gainer?

Day 15: FREE

Day 16: Keeping a picture diary.

Day 17: Meeting old friends/family.

Day 18: Popping a button.

Day 19: Unintentional gain?

Day 20: Highest amount of weight gain for a pairing?

Day 21: Waddle-comments.

Day 22: Christmas dinner.

Day 23: Honeymoon.

Day 24: Love goes through the stomach.

Day 25: AU!

Day 26: Birthday present.

Day 27: All-you-can-eat.

Day 28: Holidays.

Day 29: Tummy rubs.

Day 30: Sexy times.

Day 1: What is your favourite fatlock pairing to fatten up? Johnlock.

"No, really. No more questions, yeah I know he was spectacular but you can try to find him some other time. Right now, he needs to rest and eat a proper meal. I'm his doctor. It's my say, goodnight!"

John laughed aloud with exhilaration as he leaned, panting, against the door that he had just slammed in the faces of the reporters that had been lying in wait for Sherlock to return from the party they'd crashed earlier that evening. Sherlock had successfully exposed one of the daughter's potential suitors as a wanted jewel thief… and then caused even more of an uproar when he deduced and proved that the young woman was involved in the schemes herself.

"Blimey, news travels fast!" John chortled.

Sherlock himself gave John a slow smile, looking really quite exhausted, his curls escaping one at a time from their earlier slicked back style. John felt an odd surge of fondness for the man.

"At least one of the photographers outside was posing as a waitress at the party," the detective rumbled, "We weren't the only unexpeted guests there tonight." He gave a small laugh of his own. "Though I'm sure half the guests were tweeting my every word. Yes, the Yard will undoubtedly have Mr. Yale and Miss Waters in custody by tomorrow. Job well done, I'd say."

"Yeah, case solved," agreed John, drawing in a long contented breath and heading up the stairs, "You were brilliant! I can't believe you worked all that out just by looking at her shoes." Now what they both needed was a good rest and a cup of tea. Maybe some takeaway in a few hours when the journalists had given up.

Sherlock followed John, a small shyish smile gracing his lips. "Thank you. But you were brilliant too. I wouldn't have thought to consider her had you not noticed the clear connection Miss Waters and Mr. Yale had for one another. I had underestimated her."

John chuckled. "Yeah, well, you know. Girlfriends aren't really your area."

"No…"

That was a very odd tone of voice.
And that was a very odd glint in Sherlock's eye when John turned and looked back behind him on the stair. Sherlock's eyes corrected their gaze and flicked up to John's. John blinked. Sherlock flushed minutely. John knew that action anywhere. He felt something warm drop into his stomach.

"Sherlock, were you…"

"Hard not to, your arse was at my eye level. And those trousers are quite well tailored." Now the detective was definitely blushing.

John laughed. "Oh, God, you really were," he said, feeling amazed, "I didn't think you-"

"I don't," said Sherlock, looking away, then adding quietly, "At least, not very often. I'm sorry. Please just forget it happened, I'm tired and my mind is weakened."

"Sherlock, that's not- I'm sorry. I shouldn't tease you. I don't mind. It's all fine, remember?" John licked his lips, feeling his heart flutter.

Sherlock's head snapped back up and John felt as though he was being x-rayed.

"Oh…" said Sherlock, a smirk perching itself on his lips.

"Hm, wondered how long it'd be until you noticed," said John, stepping down a step or two so they were at the same height.

Sherlock seemed to sway just ever so slightly closer. John wondered briefly if that was due more to hunger or nerves.

"'Not gay'?" he purred silkily, and John felt himself shiver as that voice softly rushed over him.

"Er, not exactly."

"Good."

And then John was quite quickly learning exactly what those plush lips felt like pressed against his own, and God, he needed more, so much more.

He slid out his tongue to taste and Sherlock's mouth parted, inviting him in. Jesus… And then there was a curious press of teeth and hot slick tongue tentatively returning. He felt Sherlock waver again and he pulled away.

Sherlock blinked, his eyes glassy. "John?"

"Christ, what are we doing? You haven't eaten in over 48 hours!"

Sherlock snorted and let his head drop to the doctor's shoulder. "It's fine John, I've gone longer. I'm okay for a bit."

"Like hell you are," said John, looking down at him, "I'll be damned if I let you perish now. Come on. You get some rest on the sofa and I'll order us some Chinese. Doctor's orders."

Sherlock smiled softly and straightened. "Alright then. Only a fool argues with his doctor." He leaned in to kiss John gently once more.

Day 2: Who likes to fatten whom up? John likes to fatten Sherlock, but Sherlock does appreciate a soft warm John belly to cuddle up to.

Once Sherlock and John had broken up their most recent snog, John had indeed made good on his word. He steered Sherlock resolutely to the sofa, then called their favorite place down the street. It wasn't long before John tramped up the stairs once again, though this time bearing several cartons heavy with Chinese food. Sherlock felt his stomach curl into a knot at the smell. It seemed all together too rich and nowhere near rich enough at once. He groaned and slid his hands down to press into his middle.

"Hungry?" John asked sympathetically, sitting down and putting the cartons onto the table. He dug out Sherlock's shrimp and peapods and a pint of white rice, then added a carton loaded with spring rolls.

"Starving," said Sherlock, his eyes glassy and hands shaking as he reached out to take the food John had brought. He picked up his utensils and then selected his first bite, a beautifully green peapod in a thick white sauce. He lifted it to his lips, feeling his hunger building. He slipped it past his lips, still trembling. His eyes slid closed and flavor exploded across his tongue. Salty, delicious, a bit sweet, thick, sticky, crisp, slightly bitter, and just wonderfully wonderfully edible food filled his mouth as he chewed. He swallowed and gasped as his hunger seemed only to intensify. Sherlock's eyes flew open and he began shoveling the lot into his mouth. Tender succulent shrimp. crisp fresh water chestnuts, sharply sweet onions, and the more subdued peapods joined each other in Sherlock's belly. He paused to dump a large portion of rice on top of the food to soak up some of the thick salty sauce, then resumed eating with gusto.

John watched in awe. His own Hunan chicken was sorely neglected. God, how hungry the poor bloke must be. And really why wouldn't he be? John reminded himself that the git hadn't eaten in almost three days. He slide the box of spring rolls closer, hopeful that the detective would deem them worthy of providing nourishment.

A long-fingered hand shot out to take one and carry it swiftly to plump and pinkening lips.

John chuckled softly. "God, good thing we got that case sorted. You look like you need some feeding up."

Sherlock grunted, swallowing a monstrous mouthful before looking back at John.

"Hmm. Perhaps. I might let you."

"Let me what?"

"Feed me up. Obviously. You told me that's what girlfriends are supposed to do, I assume boyfriends can fill that role as well?" More food.

"Oh, er, yeah. So that means we are...?"

"We kissed," said Sherlock through another mouthful of spring roll as if that explained everything.

John grinned. "Yeah, we did," he said wonderingly.

"That's settled then. We both find each other attractive, both mentally and physically and have formed a closeness due to prolonged proximity."

"S'pose so, yeah," said John with a chuckle. How romantic. He was still watching Sherlock positively inhaling the carton of Chinese. Sherlock noticed his doctor's gaze and glanced at John's as yet barely touched dinner.

"Am I putting you off?" he asked.

"What? No, not at all. I'm just glad to see you eating, that's all," said John.

"Hmm," said Sherlock, sitting up a bit more, "Well, you might get to enjoy that a bit more in future. I'm looking into a possible case. I'll need a good cover and a convincing disguise. I can never seem to grow more than a light scruff, and it drives me mad anyway. I thought gaining a few pounds might help me in that regard. What with that party recently my face has been in the papers quite a bit too often recently."

"Oh, er. Alright then," said John, chewing his lower lip, "I think I can help with that. I'll try to make sure it's somewhat healthy. I can talk to-"

"No..." drawled Sherlock in his 'bored' tone, before giving John a kinder look, "No time. I'll let you know more once I know for certain what the job will entail. But I'm foreseeing many more hearty meals in my near future. You may get to add some meat to my bones yet." He chuckled. "But for now, please eat, John. I can't have you going hungry while I feast."

John huffed a laugh and rolled his eyes. Still he speared a bit of his chicken on his fork and raised it to Sherlock in a toast.

"Cheers!" he said, and popped it into his mouth. He still couldn't quite keep from looking on as Sherlock resumed eating. The idea of a fuller, softer Sherlock was... enticing to say the least. And now with the man's permission, he was keen on taking full advantage of this opportunity.