Every time I tell someone I write transgressive fiction the first question I get is, “What’s transgressive fiction?” If we’re talking in person, I explain it as best I can (usually not very well). But if we’re emailing I send them the definition cut and pasted from Wikipedia:
Transgressive fiction is a genre of literature which focuses on characters who feel confined by the norms and expectations of society and who break free of those confines in unusual or illicit ways.
Because they are rebelling against the basic norms of society, protagonists of transgressive fiction may seem mentally ill, anti-social, or nihilistic. The genre deals extensively with taboo subject matters such as drugs, sexual activity, violence, incest, pedophilia, and crime.