The slang word "slef" is an abbrevation of "Self" which is an abbrevation of "selvfølgelig". The danish word is a translation of the word "of course". The adjective is mostly used by street pimpz from the Aarhus area , Denmark and consists approximately 40% of their vocabulary.
A: Are you going to watch the match?
B: "Slef" I am.
A small furry animal resembling a stoat with humanoid hands and beaver like features. One must always look after their Slef, washing it every day, and make sure your Slef is happy. However remember do not talk to your Slef in public otherwise people may think there is something wrong with you. Occasionally you can show your Self a good time and take it out to parties, and let it loose. You must ALWAYS have Slef respect.