'Sexy disco hot' and the following dance sequence from Pyg is hilarious as it is disturbing.
Damian: You...you just redefined wrong.
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?"
Batman invites Catwoman to go on an adventure with him in Japan. She agrees, one one condition: so long as it doesn't involve water. As they work the case, they end up in a comic shop where Selina is repulsed by tentacle porn. At the end of the issue, a hostage is dropped into a tank full of water (and also a horrible tentacle monster), with only Catwoman available to rescue her.
Catwoman: What was the ONE THING?
Gordon in Batman and Robin #16. "Get me some clothes and DON'T EVEN ASK!"
The banana peel.
Batman on a thinly veiled version of CBR spreading ridiculous rumors about himself.