They seem like innocent rockers, but many of Chapel Hill’s bands have their egghead side. Last night as Django Haskins was fronting The Old Ceremony shouting out his introduction to “Bao Qian” aka “I’m Sorry” in Chinese. I remembered that Violet Vector and The Lovely Lovelies sing a bit in Latin, “Serva ad Manum” and about archeology “Double Axe.” This is a town that has been home to bands with names like “Light in August.” We’re not talking Clash dropping in just a little Spanish in to “Should I Stay or Should I go,” but something else again.