Enda Walsh’s abrasive, poetic two-hander, Disco Pigs is a bullet-train ride of extremes. Two 17-year-olds, Pig (Ben Gettins) and Runt (Amy McAllister) are best friends born just seconds apart in the same hospital. Hurling their angst at each other (and the audience) for just under an hour, the pair navigate the throws of teendom, clinging to their friendship for dear life.