If it’s going to bug you that through about two thirds of Boom, Woolly Mammoth’s crazy new comedy, you still have no idea who that wacky woman in the headset is who’s literally pulling the strings of the players below, you’re probably at the wrong show. But if as an audience member, you kind of like to run with absurdity, you’re in for a fun (and eventful) 90 minutes. Boom is the kind of nonsensical…