A rare jack of all trades & master of many, Belfast-based writer, filmmaker, playwright, screenwriter, theatre director and musician John Patrick Higgins has only gone and successfully written two books. We can’t say for sure, as they’re not yet published, but we can all but guarantee you that they’ll change your life. Or, your know, your immediate awareness of indispensable writing from these shores. The first of those two books, Teeth: An Oral History, is, we are reliably informed, a bitingly funny story illustrated by the author and featuring a glossary of useful terms, as most of his references pre-date…