What a fucking delight it’s been to watch John Waters journey from a proudly trashy gutter filmmaker to a wise and hilarious elder statesman of pervy culture. Tonight, Waters takes the stage at the Neptune to hold forth on all things XXXmas: perverted gifts, holiday horror stories, “religious fanaticism for Santa Claus,” the nature and purpose of Christmas exploitation films, and more. Tremendous bonus: musical interludes provided by guest star Kimya Dawson. (Neptune Theatre, 1303 NE 45th St, stgpresents.org, 8 pm, $35–$99, all ages)