Personally I was hoping for Adrien Brody after watching
The Jacket. I dunno his package size, but that's not the most important bit anyhow.
And Joker is "great in the sack" -- his wife says so.
Ya think it's because he has a big dick or what?
Might as well be. It's all in my imagination, yes? Plus, as we see in many comics, he's very talented with his tongue. No way in hell that's coincidental.