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Police officers pretend to arrest a man dressed in a leprechaun outfit as he poses for a photograph along the St. Patrick's Day parade route in Dublin in 2017.
Zach Paul sits with his Irish wolfhound in Chicago as he waits for the start of the St. Patrick's Day Parade in 2012.
Paddy Cusack of Cheltenham, England, enjoys a pint of Guinness in 2016.
A "leprechaun" displays his skills on the water after members of the Plumber's Union Local 130 poured environmentally safe powder along the Chicago River in Chicago, turning it green for St. Patrick's Day in 2013.
Andrea Sicignano (right) of Long Island high-fives a participant marching in a190-year-old St. Patrick’s Day parade in Savannah, Georgia, in 2014.
A group of revelers disobey the "No Entry" signs and climb a London fountain on St. Patrick's Day in 2014.
A spectator in New York City shows his Irish pride as he watches the annual St. Patrick's Day Parade in 2017.
Competitive eaters (left to right) Pat Bertoletti, Joey Chestnut, and Juliet Lee face off in the first 2009 Stroehmann Sandwich Slamm in New York City, an eating contest featuring corned beef on rye sandwiches.
President Barack Obama gives a thumbs-up as he celebrates St. Patrick's Day with a pint of Guinness during a stop at the Dubliner Irish pub in Washington, DC, on March 17, 2012.
Contestants in Copenhagen, Denmark, drink green beer at the first stage of the annual St. Patrick's Day three-legged race in 2005.
An emergency crew responds to a woman during the 252nd annual St. Patrick's Day Parade on March 16, 2013, in New York City.
Lauren Pott of Shelby, North Carolina, uses a funnel to drink beer during the St. Patrick's Day celebration in Savannah, Georgia, in 2005.
A cat named Pouce takes part in Montreal's annual St. Patrick's Day Parade in 2015.
Revelers enjoy cold beers during London's St. Patrick's Day celebrations in 2011.
Revelers enjoy the St. Patrick's Day Parade in Dublin on March 17, 2016.
Rielly Weathers watches a band pass by during the St. Patrick's Day Parade in Savannah, Georgia, in 2009.
Caryn Edleman kisses an unidentified US Army Ranger in 2002, during the Savannah, Georgia, St. Patrick's Day Parade.
Revelers watch the London St. Patrick's Day Parade in 2013.
Caoimhe Cooburn-Gray of Dublin poses for a picture on St. Patrick's Day in 2016.
A group of children pose for a photo during the Dublin's annual St. Patrick's Day Parade in 2015.
Revelers gather in central London for the annual St. Patrick's Day celebrations in 2014.
Contact Gabriel H. Sanchez at gabriel.sanchez@buzzfeed.com.
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