Reviews Friends for The Post as it's a farce (9)
I believe the answer is:
slapstick
'it's a farce' is the definition.
(thesaurus)
'reviews friends for the post' is the wordplay.
'reviews' shows that the letters should be reversed in order (view the letters another way).
'friends' becomes 'pals' (pal is a kind of friend).
'for' is a charade indicator (letters next to each other).
'the post' becomes 'stick' (I can't explain this - if you can you should believe this answer much more).
'pals' written backwards gives 'slap'.
'slap'+'stick'='SLAPSTICK'
'as' is the link.
Can you help me to learn more?
(Other definitions for slapstick that I've seen before include "Comedy with physical antics" , "That's laughable" , "Knockabout comedy based on action rather than words" , "Boisterous comedy based on actions rather than words" , "Unsubtle comedy" .)