Smigus Dingus, Swiety Lej, Oblewanki - Easter Monday
Great sociability characterizes the week following Easter.  Since there is no work, the custom of Easter Monday permits the boys and girls to sprinkle each other with water or perfume.  Sometimes the boys drench the girls, often gibe them a complete dousing.  The boys sing dyngus songs, requesting food or gifts and threatening with a drenching should the requests be denied.
The smigus festival is said to commemorate the 10th century when the Poles accepted Christianity, and were baptized en masse.