Grant Morrison's Batman/Funny

Batman on a thinly veiled version of CBR spreading ridiculous rumors about himself.
'Sexy disco hot' and the following dance sequence from Pyg is hilarious as it is disturbing.
Batman vs. The Red Hood:

Batman (Dick Grayson): Don't make me humiliate you in front of your new girlfriend.
Red Hood: SHE'S NOT MY--

Batman: *slams his head into the ground* Backstory. Not interested.

"What is it about the sombrero? Some things are just naturally funny."
"Anyway, what's the problem? Haven't you ever been mind controlled by a gorilla?"
Gordon in Batman and Robin #16. "Get me some clothes and DON'T EVEN ASK!"
The banana peel.
Damian didn't know about the rocket.
Doubles as a Crowning Moment of Awesome in certain aspects, but in Batman Incorporated: Leviathan Strikes!, three of the teachers at the school for super villains that Stephanie Brown is investigating are unnamed expies of Lady Gaga, Katy Perry, and Rihanna. The headmistress is Madonna