Four Colours. Four students form a circle in the faculty's courtyard, wearing a yellow, blue, red and green t-shirt. In turns they smear each other's faces with yellow, blue, red and green paint.

Then they wipe their face by pressing it onto a white cloth, and they swap t-shirts. This they do four times, until each t-shirt has been on each student, and each one has passed on something to each other one.