Touchy topic (3,6)
I believe the answer is:
hot potato
'touchy topic' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hot potato that I've seen before include "Troublesome situation for spicy spud" , "tricky case" , "Controversial issue (colloq.)" , "A difficult situation" , "troublesome affair" .)