When Fili comes home from an 'outing' with May, the inn keepers daughter and hears Kili upstairs shouting, the golden haired dwarf is instantly on high alert and he draws the two short swords he got for his five and ten name-day the previous month.
He approaches the stairs warily, eyes flickering to check for hidden assailants, but when Fili hears a crash and some rather creative Khuzdul caution is thrown to the wind and he near flies up the stairs, barrelling into the door of their shared room, fully prepared for battle.
However, what he finds has him laughing in amused relief his little brother has apparently thrown his fine bone tooth comb against the wall and is sat in the middle of the floor, pouting like a tiny dwarfling and his hair in a state of disarray.
"Not funny. Won't go right" Kili scowls at his brother, tugging a lock of raven hair roughly, and Fili understands, his brother is trying to braid his hair.
"It's okay Kili it took me ages to learn how to do it" Fili reassures, picking up the comb as he walks towards the grumpy dwarf.
"It looks so easy when mother does it, but it gets all tangled and looks funny when I try" Kili whines as his brother kneels in front of him, comb and a clasp in hand.
Fili just nods in understanding before running the fine comb through a small section of hair in his brother's line of vision before separating the section into three and with meticulous motions, goes about showing Kili how to move each strand so they're tightly woven in intricate patterns before wrapping the little silver clasp around the end, securing the hair into place.
"Now, you try it." Fili orders, undoing one of his own braids, because it's always easier to braid someone else's hair than it is your own.
It takes several attempts, and lots of explaining for Fili before Kili finally gets it, and once he does, the dwarf spends what feels like hours braiding almost every available strand of golden hair until Fili is certain that he looks more like a maiden than anything else.
Once Kili's urge to braid every bit of hair on his brother's head, the two settle on their respective beds, and the younger dwarf's grin is positively evil.
"So, how was your outing to the, ahem training fields, brother dear?" The knowing glint in his little brother's eyes causes Fili to shift uncomfortably.
"I don't know what you mean, it was the same as it always is" he replies, hoping that his brother is just fishing, the smirk he gets in response dashes those hopes.
"Oh really? Because I heard from a very pretty flower that you and May have been frequenting the barn behind the inn. Checking out the alcoves are we?" Kili knows he's got his brother when said siblings cheeks flame scarlet and he shifts uncomfortably.
"I, do not kiss and tell Kili" Fili replies, trying to maintain his dignity
"Well, from what I heard, wasn't much kissing going on, oh great 'golden stallion'" Kili's grin is wiped from his face when Fili launches himself at his younger brother and drags him onto the floor where he attacks Kili's ribs and neck –knowing his brother is particularly ticklish there- and laughing evilly when Kili screams with laughter and tries to wriggle out from underneath him.
When Dís comes home to an incredibly quiet house, she's somewhat concerned and goes upstairs to check her on her generally noisy children, and smiles when she finds them on the floor of their bedroom, dead asleep with Kili's head resting on Fili's chest.