Rövarspråket (English: The Robber Language) is a Swedish language game. It became popular after the books about Kalle Blomkvist by Astrid Lindgren, where the children use it as a code, both at play and in solving actual crimes. The principle is easy enough. Every consonant (spelling matters, not pronunciation) is doubled, and an o is inserted in-between. Vowels are left intact. It is quite possible to render the Rövarspråket version of an English word as well as a Swedish, e.g.: sos-tot-u-bob-bob-o-ror-non or sostotubobboborornon