Painting on glass is a popular Polish form of folk art by which the artist paints a picture on the reverse side of a glass surface.

The Easter season in Poland ends on Monday when the traditional Dyngus-Smigus custom is observed, which is the most humorous of Polish customes at Easter time.  The young people break the solemnity of Easter by a burst of frivolity. They visit from house to house singing songs, playing pranks and merrymaking.
After getting the girls out of their beds, the boys will switch their legs and douse them with water.  On Tuesday, the girls are supposed to reciprocate in kind.