In Belgium, as well as in some parts of the Netherlands, senior students celebrate their last 100 days of high school with a special day called "Chrysostomos" or "100-dagen feest" (“100-days party”). Tradition states that on this winter day, seniors are allowed to pull pranks on their teachers and fellow students. Some schools handle a theme as dresscode, while others go for the traditional outfit: blue jeans, a black cotton jacket, a black hat (with a red or blue ribbon) and a whistle around the neck. Some even paint their faces and some seniors also carry a spray can (shaving cream or other fluids) to “attack” the non-seniors with. A noisy march through town is also part of the gig. Later during the day, students perform an act at school, usually a silly show involving school or a parody. In the evening, students head to a rented club to party. This involves dancing, singing and plenty of beer to get a taste of fraternity life. Sometimes even teachers join the party to show that they too have a wild side. In the Netherlands, households where a child who has passed their high school exams often hang the student's backpack on a flagpole which is attached to the front of the house.