I've name changed as this would out me, work at very small workplace.
Today a person at work started talking about someone he knew having mental health issues, and being "nutty as a fruit cake" because they had been sectioned.
AIBU to be upset by this which I consider to be incredibly offensive (I have MH issues myself and have been sectioned)?
I called him out but he really did not seem to understand how offensive he was being (other colleagues did and tried to shut him up but he kept blathering on).
What, if anything, should I do about it?