Witty saying carries little weight after pie fight (7)
I believe the answer is:
epigram
'witty saying' is the definition.
(I've seen this before)
'weight after pie fight' is the wordplay.
'weight' becomes 'gram' (unit of weight).
'after' says to put letters next to each other.
'fight' indicates anagramming the letters (I've seen 'fighting' mean this (I've seen this in other clues)).
'pie' is an anagram of 'epi'.
'gram' put after 'epi' is 'EPIGRAM'.
'carries little' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for epigram that I've seen before include "short satirical poem" , "Brief witticism" , "Clever remark" , "A clever witty saying" , "Bon mot" .)