Can Batman dance?
But there is a subtle “running joke” that crops up now and again over the last 60 years of Batman: Batman knows how to do everything obscure, but some times normal things escape him. Oh, it’s subtle and seldom important; little things, really. Batman can’t sing (except for the one on JLU). Batman knows about movies but never watches them. Batman (or at least Bruce Wayne) doesn’t understand children. Batman knows nothing about video games, baseball, or popular music. In short, the implication is that Batman has no time for anything purely fun or frivolous. Makes sense; why would he?