I just want it to have some credibility.

If I happen to meet (or play) a barbarian who crucifies people for breakfast, I don't expect him to say "How do you do, sir ? As you have sexually assaulted my mother, would you please stand still while I remove some limbs from your body ? I would quite enjoy removing them one-by-one, pour them in butter and have insects eat the rest of you... alive."

Of course that text would fit another type of character smile