Hiroshima Location

Alright, listen up you smooth-brained simpleton. You really think that's funny? You probably still ask your parents for help with your shoes. Here's how it is: the joke plays on the stereotype of Japanese people being oblivious, linking it to the fact that Hiroshima was in Japan and suffered a bombing. You probably didn't know that Hiroshima was in Japan, huh? That's what makes it so funny to your uneducated mind. Basically it's racist.