The basic idea of the programme is a "children's birthday party" for adults. Each programme featured a celebrity guest who had to take part in crazy, silly and often deliberately "moronic" games. Both presenters had to compete against the respective guest in various games. After a lost game there was a cake for the guest, after a won game a cake for the presenters Hella von Sinnen and Hugo Egon Balder. After usually 6 to 8 games, the winner was the one who could claim the fewest cakes. The hosts usually lost, who then had to put their heads through a painted cardboard wall with two holes at the end to have the cakes thrown in their faces by selected people from the audience. Guests who had cakes thrown in their faces included Harald Schmidt, Jürgen von der Lippe, Rex Gildo and Klaus & Klaus. With Harald Schmidt and Klaus & Klaus, however, this was planned from the start.