Kurt Osiander is a Brazilian Jiu Jitsu black belt under Ralph Gracie‘s tutelage. Osiander is one of the cult heroes in BJJ’s community,  having been an active competitor since the mid 1990’s. Kurt Osiander’s straight forward personality and witty comments expressed in his video blog (Kurt Osiander’s Move of the Week) have given us well recognized phrases such as “shut up and train” and “you f****d up a long time ago”, which turned the Ralph Gracie Academy head instructor into one of the most beloved personalities in the sport especially within the YouTube generation.