This is absolutely hillarious. On the 6th of December St. Nikolaus descends to earth and visits the children, offering them nuts and sweets if they have been god during the year. St. Nikolaus has nothing to do with Christmas - that's when Christ was born. It is possible to hire students to visit children in Nikolaus disguise. That's what happens in this sketch, where the family is watching TV and no one takes a second of attention to welcome the "saint". Hillarious.