CONAN and manners.

CONAN is new to town, and a little confused by the mocking banter of the local criminal underclass.

Civilized men are more discourteous than savages because they know they can be impolite without having their skulls split, as a general thing.

From "The Tower of the Elephant"
Page 82. "The Complete Chronicles of CONAN"

Much as I want to, I just can't fault the logic of that.