Sex. Secrets. Performance-art blogs and blackmail. It's a typical day for a teenager in Salem, Oregon. In Stephen Karam's Speech and Debate, three teenage misfits discover they are linked by a sex scandal that's rocked their town. When one of them sets out to expose the truth, secrets become currency, the stakes get higher, and the trio's connection grows deeper, in this dark comedy with music. See the fiercely funny show at the Calderwood Pavilion at the Boston Center for the Arts.