on the fun. Then inevitably Fris would hear of the latest prank (sticky glue on the throne/ in the crowns, epic food fights, piglets storming in on official meetings, shield surfing in the stairs …) and round up her small troublemakers in zero seconds flat – and since the Durins are who they are (Frerin crying, Thorin just staring ashamedly into the floor, Dis failing spectacularly at feigning innocence for all of them) Dain were usually the one who had to try and talk them out of trouble (he actually succeded 1 out of three times – he was almost as smooth as Gimli).
Then of course all the shit with Smaug and Azanulzibar went down and the remining three had to grow up too fast. I still imagine that Dis and Dain would remain very close friends, being the bestest penpals, trolling Thorin whenever the opportunity presented itself (partly for his grumpy overtights selfs own good but mostly for the heck of it).
And then when Dis arrived in Erebor again, they would help each other through their grief and Dain especially would be essential in Dis learning how to laugh again (because she needs it desperately, what hasn’t that woman lost omg).
And then. Once both of them arrives in the halls. Once all the shit with the Ring and the War is over. Once necessary big family talkshow are done. Once Dain and Dis starts getting BORED. Omg, the other dwarves won’t know WHAT hit them (except Fris because she saw it coming for weeks). Heck, I’m sure even Mahal got wide eyes when they pulled of some of the more elaborate pranks. And don’t you doubt they dragged Frerin along into their quest of getting their hands on that complete lexikon of the flower language. They got into a downright war over it against the Ri Brothers of course, because A) There’s no way Oris losing his major blackmail material over Thorin and B) Of course he drags his brothers into it. Dain takes endless joy in how horrified Thorin is over all of this (though Dis is worse than Dain ofc).
And now this is more of a Dain-Dis friendship headcanon than a MunDain one. Sorry (not sorry).
OMG THAT’S AWESOME. THAT IS JUST AWESOME.
*grips table until it creaks* WRITE. THE THING.