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fairies - whores
troglodytes - toothpicks
psi elementals - exhibitionists (someone already had this idea - so it's spot on)))
pit lords - masochists
magogs - Gogis :D
devils - just dumb meat :D, there's no other way to describe them :)
golems - lousy
zombies - disabled
gargoyle - Grigory (no offense to anyone)
basilisk - Vasilisa the Beautiful
gorgon - just a bull :)
centaurs - buddies :cool:
phoenixes - Phoenicxes (nothing vulgar, this is if you read it letter by letter - Phoenix))
naga - meat grinder
goblins - thugs
This is pretty much all I remember...