To commemorate the release of Dark Knight Rises this weekend I have come up with 2 truly heinous jokes (on the plus side they are both kid-safe) so use them at your own risk:
Q: What do you call a storefront display of the Caped Crusader?
A: A Batmannequin!
Q: What do you call a nerd in a Batman costume?
A: The Dork Knight
Feel free to provide your own (much better) jokes in the comments.