high fantasy setting where its a popular superstition (how much of it is actually accurate is up to u) that saying the name of any kind of inhuman mischief-bringer will summon them (speak of the devil and so on).
in most places its still common practice to use the regular respectful euphemisms: fair folk, good neighbors, etc. but somewhere down the line the folks in this particular area got kinda sick of being so formal about these creatures, so now its local practice to just aggressively mispronounce their names.
now instead of goblins gremlins and demons theyve got stories of gerblins gemmins and dimmons.
adventurer: hi we’re here to slay the, uh
barkeeper: the what
adventurer: the uh
barkeeper: the what. say it.
adventurer: the…the dwagon.
Thor: I’m here looking for my brother.
Avenger: who?
Thor: ……….woki