Seven Psychopaths is delightfully self-aware, self-referential, and self-parodying, and the audience is in on the joke.  In exists in the vein of greats (and sometimes not-so-greats) about writers who live out their work, like Adaptation (great) and Synecdoche, New York (not so great). Seven Psychopaths follows Marty (Colin Farrell), as he attempts to write a…