Tipitina's is probably the most suitable stage for precocious comedian Bo Burnham, who on the YouTube videos that introduced him to the world and a subsequent Comedy Central special proved he can settle for a career in lounge singing if the comedy doesn't work. He's a Facebook-generation Tom Lehrer who does standup and also has written songs about math. Tickets $25. 8 p.m. Saturday. Tipitina's, 501 Napoleon Ave., 895-8477; www.tipitinas.com.