On Friday the thirteenth to go skiing on brushes in the Belgian Deurne is asking for trouble. The Mujnamur-Vishna-Hoeniw-Mahal-Prahati knows all about it. His disciples also had better choose another day to call the family Backeljau. Thérèse, who is about to leave for the Mokawi Indians, can use some extra manpower to carry her suitcases down. It is all too much for Çois and he loses his famous angelic patience. Franky will think twice in the future before he makes lurid jokes. It's not for nothing the ... thirteenth episode.