Pants on fire

From a Washington Post article: "Last week President Mamadou Tandja told BBC Radio, "the people of Niger look well-fed, as you can see."

REALLY? Are you quite sure?
(WARNING: graphic images of children dying of malnutrition)

liar
noun
One who tells lies: fabricator, fabulist, falsifier, fibber, prevaricator. Informal storyteller. Law perjurer.