The day originated after the baptism of Polish Prince Mieszko I in 966 A.D. and evolved into a massive wet t-shirt contest. Otherwise known as “Easter Monday” or “Wet Monday” Dyngus Day is mostly a Polish holiday where girls get wet and wild. In the U.S., Dyngus Day celebrations are widespread and popular in Michigan, North Carolina, Texas, New Hampshire, South Bend, Indiana (free polish sausage for ND students), Yale University, Chicago, and Buffalo, which is home to the largest organized celebration and the world’s largest Dyngus Day squirt gun.