Given everything else about the man, would it even be surprising that the Joker sometimes where kitten heeled pumps? If this point the break point in your suspension of disbelief please explain in a short essay.

I still find it funny how Joker stood in the middle of Metropolis with his legs out like that, wearing high heels, all for the sake of a single gag to mess with Lex Luthor. That's dedication.