A little cleanup.

"You ever had any backdoor action pussycat?"

Selena gave the maniac an uncertain look, "...what?"

"I'm asking, on your verifiably many sexcapades with Bats and the police and half the who's-who of Gotham, have you ever taken it up the ass?"

"..."

"Well, there's a couple things you should know, for safety purposes." He rose, striding over to one of several trays of instruments and picking up an almost comically large syringe tube. "Rule #1, clean everything out first. Don't want to give your partner a nasty surprise after all!"

"Joker what the hell are you-"

He carried on, filling the arms-length syringe with an off-green viscous fluid from a tub. "Rule #2: always use plenty of lube. Talk about a pain in the ass amiright? HAHahaha!"

He knelt down in front of the now-desperately struggling Catwoman, "Y'know what the greatest part about being a career villain is? Y'never have to do things halfway. Hahahaha!" Selena squealed as he business end of the blunt syringe was positioned between her cheeks, the position of her legs making it impossible to resist as it squeezed through her tight butthole. Normally when she was being tortured she'd try not to make any noise, she wouldn't give them the satisfaction, but Selena couldn't hold back a high pitched whine through gritted teeth as Joker emptied half a liter of the greenish liquid into her bowels.

"Very good kitty! Just a few more like that and we'll have you spic and span!"

"Noooo!"

"HAHAHHAHAHahahahehehe... Whew, oh the look on your face. Don't worry, it's got something special to cheer you up. Here's #2!"

"AAAAAAHhhn... Mmn!"

"#3!"

"Stop-stop-stop-stop-STOP! Urgh!"

"Whew, you sure can hold a lot kitty! Can't be healthy though, you look so full!" She did, her bloated belly strained against the tight confines of her suit. "Why don't you just... let it all out?"

"Fuck you!"

"Ohohoho, no need to start swearing! Just relax kitty, I got a litter box right here!"

"Fffffuuuuck yooooOOOUUUU!"

Joker cackled as her guts contracted, releasing the enormous amount of greenish fluid into the bedpan.

"See?" He popped a finger into her asshole, drawing a surprised squeak from the anguished woman, rubbing it in and out for effect. "Squeaky clean! HAHAHAHAHAH-"