You can read an introduction to this often tricky subject here.
A talk about cars was as good a lead into the tricky subject of money as anything else.
Pirates could be a tricky subject, bringing in the matter of sailors using swords.
A novel about novel-writing, which handles its tricky subject with a light touch.
All of this makes Paige a tricky subject for a biographer.
The judge's name has been turned into to a code word that can be used to talk about tricky subjects without talking about them.
So, what to do with a dead user's information remains a tricky subject.
A last word on the tricky subject of double use or only civilian use.
Cremation has always been a tricky subject for the Catholic Church.