One time i said i didn't think a study with a sample size of two (or one, depending on how you see it) was "Absolute Proof" of income equality in the US to a friend, and said nothing about income equality itself, while my sister was in the same room.
She shouted at me for about one and a half minutes, said she "Had higher standards of [me]", and ended by calling me a "misogynistic douchebag".
The next time i tried to say something to her, she said she didn't want to hear it unless it was an apology for what i said.
This is one of the many reasons i don't like her.
