Uh oh. You’ve accidentally stumbled into open mic night at the local comedy club. Brace yourself for obvious jokes and expired subject matter. “Why is it that death metal singers sound like Cookie Monster?” “Boy, that Fred Phelps / Sarah Palin / Michelle Bachman / Dick Cheney sure sucks, right?” “Vaginas are cool, huh? Huh? Huh???” If only this laugh-free experience could be set against a backdrop of tepid and generic punk rock. Your wish is Potbelly’s command.