Bofur, Bifur, Bombur

It is possible that they were referring to the characters from the Hobbit films - Bifur, Bofur and Bombur.
The relationship between Bifur, Bofur and Bombur can be described as follows:
Bifur and Bofur are related, and Bofur views Bifur as a brother. However, according to actor William Kircher, who played Bifur, it's possible that Bifur is closer to Bombur than to Bofur, as Bombur also has some physical limitations.
Bofur is an optimistic, humorous, and perhaps a little naive character. He develops a genuine affection for Bilbo, while the other dwarves treat him with suspicion or disdain.
Bombur is a chef who is very fond of Bofur and Bifur. Bombur's physical appearance makes him appear comical and a bit clumsy.
It is also known that Bifur, Bofur and Bombur are miners, so their weapons are cruder, and in battle they use whatever comes to hand.

Bifur has an axe stuck in his head, causing him to speak the ancient language of the Dwarves.

Bofur uses a pickaxe as a weapon.

Bifur uses a spear as a weapon.

Bombur uses a huge ladle as a weapon.