Spex (speksi in Finnish) is a form of amateur comedy theatre act performed by university students in Sweden and parts of Finland. University cities, such as Gothenburg, Lund, Uppsala, and Linköping have long-running traditions of spex. The word is likely derived from abbreviated student slang for spektakel (spectacle; scene; show). This form of comedy theatre may also be known as Gyckel (buffoonery), when performed at a Gask. History. The first spexes were performed possibly as early as the 16th century in Uppsala.
https://en.wikipedia.org/wiki/Spex_(theatre)