Image imported from derpibooru 
Original Description:
 
Rainbow dash is very athletic, she is often working out or checking up on the weather. One evening, Rainbow dash had returned home from a days work. “So…many…clouds” she huffed, “sheesh, on hot days like this, it sure is nice to finally gets some yawn rest…” as Rainbow trudged to her bed, she kicked her shoes off to relax, her feet were sweating with stench, but Rainbow didn’t even notice. The pony laid in her bed, but as she drifted off, a knock came from the door.  
Rainbow gasped “oh no, I forgot” she yelled to herself, “Fluttershy was here it give tank his check up!” Rainbow bolted down stairs, she yanked the door open, she gasped “sorry Fluttershy, I was sleeping…again.” Fluttershy smiled, “it’s ok, Rainbow Dash. I knew you were working very hard up there today.” Rainbow chuckled, “yah, I was pretty awesome!”
 
Fluttershy stepped in, she walked around and noticed a vague smell, but couldn’t decipher it.
 
Rainbow presented Tank, her pet tortoise, to Fluttershy. “Mmm, everything seems to be in check” she smiled. Rainbow held her breath and sighed in relief. Fluttershy smile quickly faded, the strange stench was back and stronger than ever. The bright yellow pony pinched her noes, “um, Rainbow?” Fluttershy asked. Rainbow Dash turned her head. “Um, have you been cleaning the place?” Fluttershy shy asked politely. Rainbow replied, “well of course!” “Then what is that smell?” Fluttershy thought. Rainbow Dash commented, “well you were the one who noticed it, maybe it’s you?” Fluttershy denied this, but Rainbow processed, as she had began to smell said stench. “Maybe you’re feet stink” Rainbow ranted, “I mean there always exposed.” “Flutterhsy looked down at her feet, she clenched her toes and blushed; but as she did, she looked at Rainbows feet. “M-maybe it’s you?” Fluttershy pondered. Rainbow jumped, “NO WAY! I don’t stink!” Rainbow dash was furious, but the thought nagged at the back of her mind. “But, we’ll…I mean…” Rainbow questioned, “do you mind, looking the other way for a second?” She asked to Fluttershy. “Of course” Flutterhsy replied as she turned to face the opposite direction. Rainbow sat down and placed her foot on her knee. She clenched her teeth and took a big wiff. “AGH!” She groaned, “I do stink…” Rainbow Dash frowned, as Fluttershy turned to face back to Dash’s direction. “Oh don’t be upset, Dashie” Fluttershy calmed, “you know, I use to havefoot odors to.” Rainbow faced Fluttershy, “y-you do?” She asked.
 
Fluttershy was embarrassed at first but told Rainbow Dahs her story. “You see, when I still lived in Cloudsdale, I wore a normal pair of shoes, much like the others. Once I found out I had foot odor, I was so embarrassed, I wanted to do something about it, but I didn’t want to get more made fun of than I already was. But when I landed in Ponnyvill, I finally stepped out of my shoes and embraced nature’s.” Rainbow played coi, “is that why you were sandals?” Rainbow Dahs asked, Flutterhsy then nodded.
 
Rainbow was eager to get rid of her foot funk, but didn’t want to be laughed at, “if you need to, Dashie, I can provide” smiled Fluttershy. Rainbow Dash was hesitant, but gave in. Fluttershy was happy for her friend.
 
The nest day, Rainbow Dash headed to Fluttershy’s cottage barefoot, she flew over there as fast as she could. When she arrived, Rainbow knocked on the door. “Hey, Flutterhsy” the pegasus questioned, “I’m here.” Flutterhsy opened the door to let Rainbow inside.
 
Rainbow Dash looked around and noticed a big chair. “What’s that for? Rainbow asked. Flutterhsy replied, “it’s for your fitting” the bright yellow pegasus smiled. Rainbow hopped into the big chair. “Heh, nice and comfy” Rainbow remarked. Flutterhsy beamed, “I’m glad you like it, you’ll be there for a while.”
 
Rainbow was soon strapped down, rather quickly. “Um, don’t you think this is a bit much for a shoe fitting?” Rainbow asked, struggling to move her legs and feet. Angle bunny the jumped onto the Rainbow Dash with a rope, he quickly tied her up and smiled. “It’s ok, Rainbow Dash, this is all necessary…” Fluttershy then grabbed a box full of random objects. Rainbow clenched her teeth and toes, “NO! Please, I beg of you!” Rainbow Dash pleated. Fluttershy grabbed a feather and started to tickle Rainbow Dash’s feet. “MUHAHAH, NO! AHAHAHA!” Rainbow laughed as she struggled. Rainbow tugged and turned, but was still being wooded by the feather. “NO! STOP! AGH AHHAHAHAHA!” Rainbow continued, Fluttershy finally stopped, but was soon to continue. Fluttershy pulled out a measuring tape, to measure Rainbow’s feet. “7.5” Fluttershy spoke, “oh, you have such small feetsies, but there’s so cute.” “Y-you think my feet are cute?” Rainbow blushed. “Of course, we maybe only friends, Dashie, but I do have a thing for feet.” Rainbow looked down and blushed. “Fun fact, Rainbow Dash. I made my sandals myself.” Fluttershy smiled, you can’t get no other pair of sandals like these in Ponyvill.”
 
Fluttershy then wet her finger, she touched Rainbow’s left foot, Rainbow winced at Fluttershy’s cold, wet touch. Fluttershy rubbed Rainbow Dash’s feet, Dashie purred. Fluttershy then splashed Dashie’s feet with water and scrubs them down. Once Dash’s feet were clean, Fluttershy painted Dash’s nails. “I couldn’t decide on one color, so I decided a rainbow” smiled Fluttershy. “Nail polish?!” Rainbow roared, “but but but, I don’t do…” Rainbow was cut off and watched as Fluttershy glossed her toes in shiny nail polish.
 
Once that was over, Rainbow began to giggle again. Fluttershy started to tickle Rainbow Dash again.Fluttershy squished Rainbow Dash’s feet and caused her feet to blush red.
 
An hour passed, Rainbow passed out after a laughing fit. She was sleeping on Fluttershy’s house. Rainbow got up and planted her feet on the ground, but she could no longer feel the wooden floor. Rainbow Dash looked down her feet were covered in a pair of odd Yellow sandals. Fluttershy walked up to her, “oh I’m so glad you’re awake, Dashie.” “Well I can’t exactly remember much, what happened” Rainbow Dash asked as she rubbed her forehead. “Oh, you feel asleep when you arrive, so I decided to just go ahead with the fitting” Flutterhsy smiled, “I also did you’re nails.” Rainbow looked down, she was impressed, but still skeptical about her new shoes. Fluttershy assured Rainbow that they would work, and are perfectly fitted for her.
 
“There exactly sized, arrow dynamic, you’re style, and perfectly comfortable.” Flutterhsy stated, “although I did have Rarity’s help.” Rainbow Dash thanked Fluttershy and quickly flew off to test her new pair.