What kind of man has bats on the brain? The 100 percent cotton Joker Detective #880 by Jock T-Shirt highlights the famous cover where the Clown Prince of Crime is probably thinking about DC Comics' Batman...or if it is normal or not to order a plain calzone...you know, just cheese? It basically is a 4 pound mozzarella stick. Either way, the Joker is known for both his insanity and his obsession with the Dark Knight so why not get the Joker Detective #880 by Jock T-Shirt? It'll be like thinking about Batman and the Joker at the same time. Yeah.