In just two days the entire U.S. – and much of the rest of the world – will be green (green clothes, green hair, green balloons, green beer...). But why do we wear green on St. Patrick's Day? Why the leprechauns? And why the pinches for those who don't comply with the Irish holiday? This video explains the origins and customs of St. Patrick's Day in under three minutes so that we'll know why we act like drunk green fools every March 17th.
