"Well, one good sneerer must always help another." Tyrion stated solemnly, before he smiled softly and slyly, "Very simple. Look any person here directly in the eye. Do not break eye contact -- and then smile."

He tipped his head up, "Nine times out of ten, they think you have something in your pocket that can kill them. The tenth time - I tend to just flash my green, glowing hand. It works wonders."