Love the idea of hobbits and dwarves having very different insults due to cultural differences, so something that could start a family feud between hobbits means nothing to a dwarf and something that would cause a dwarf to consider you an enemy for life likewise means nothing to a hobbit. Or, better yet, comes off as something else entirely.
This leads to an extended series of confusing conversations between Thorin and Bilbo, who spend the quest calling each other increasingly creative insults and then not understanding why the other barely reacts. This eventually fades into nothing for Thorin and fond comments Bilbo says to himself, at least until the disaster that is the goldsickness-induced breakup right before the battle. This time, they throw the worst insults they know at each other, but as Thorin really gets going, Bilbo stops with a completely baffled look on his face before saying "what the- fuck's sake- is this really the proper time for you to be flirting with me?"
Thorin, who has spent the entire second half of the quest wondering while Bilbo hasn't been responding to his attempts at flirting, snaps out of goldsickness from sheer shock.
Everyone watching this is extremely confused.