dojerk

noun- a person acting offensively in the martial arts school

I.e.: "That Supreme Grandmaster lords it over everyone like he's the Emperor- what a dojerk!"

Mc Dojo

Mc Dojo- noun: A poor quality martial arts school characterized by high-volume turnout of students with belt ranks that should take a lot longer to achieve than they do.

I.e.: "My neighbor just got his black belt after only one year of training-he's obviously enrolled in a Mc Dojo."