rape, abuse, or otherwise most things that are people's very real traumas. it feels like most people who think that nothing is off limits just want people to pay them that courtesy when they tell their disgusting ass """jokes"""

Family

Nothing. Nothing is sacrosanct.

It really depends on the context. I would probably make a holocaust joke but i wouldnt joke about tragedies of people around me.

Nothing, nada, and bupkis.

i can't think of anything, i feel nothing is off limits

Animals being run over by cars.