perpatraitor
someone who tries to act like they belong to the hip-hop scene,when they don't have the first clue
perpatraitor
Someone who is hired to perform wrongful acts, but who then "turns nose" --- i.e., rats out his unscrupulous employers.
Professional criminals are very careful and wary when hiring new recruits, since he knows that many of them could either just be an undercover informant, or become a perpatraitor if things get too "hot" for him.