why doesnt batman r*pe the joker. is he stupid?

nah but seriously ive always found a flaw in batman's no kill rule: he specifically doesnt want to kill joker in order to stop him because he doesnt want to take a life that could be rehabilitated right? so killing is out of the question and letting others kill him also isnt. alright so why doesnt he just r*pe the joker? because the joker is motivated by a want to become a matyr or otherwise is okay with being beat up, but surely the trauma of a r*pe would rewire his brain to not wanting to be a criminal any more? either that or he's homosexual and enjoys it and will reform for the peepee

i've always thought about this and it's shocked me it's never come up before