Happy St. Paddy's Day! Every year on March 17, everyone is Irish for the day as we celebrate the patron saint of Ireland. The holiday celebrates Saint Patrick bringing Christianity to Ireland while driving snakes from the land! But in the United States, it's a reason to drink and party! What was once a religious feast day has become a modern day festival celebrating Irish culture and all things green. Click on for funny memes along with interesting facts about St. Patrick's Day provided by History.com.