Witty remark or joke (9)
I believe the answer is:
wisecrack
This clue is a double definition.
'witty remark' is the first definition.
(I've seen this before)
'joke' is the second definition.
(I've seen this before)
(Other definitions for wisecrack that I've seen before include "Witty comment" , "Flippant remark" , "Sally" , "funny remark" , "Spoken witticism" .)