Brazilian Jiu-Jitsu term for traitor. Originating from an old brazilian cartoon character. A person who changes teams, challenges his masters or coaches opposing fighters. In general, someone who shows a lack of respect or loyalty to his team and instructors.
BJ Penn is a creonche for training with Ralph Gracie for years and then challenging Renzo Gracie to a fight.
by bjjitsu August 19, 2009