Heh, sadly both Batman and Robin look like they're standing on the roof to have a quick pee over the edge... look out pigeons!
I love the Mime, it's a shame she never got her second appearance, where she was going to be the target of the affections of... the JOKER! :) (This was way before Harley of course). What would have been a comic story became a text story instead and has the wonderful moment where Mime (driven to distraction by the Joker's constant yak-yak-yak) finally snaps and slaps him in the face.
As she stalks off the Joker looks like someone who's had a major revelation and notes "Oh COURSE!!! THAT'S the sound of one hand clapping!"