Ruin gag about bickering (7)

I believe the answer is:

arguing

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'bickering' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'ruin gag about' is the wordplay.
'about' indicates anagramming the letters.
'ruin'+'gag'='ruingag'
'ruingag' is an anagram of 'ARGUING'.

Can you help me to learn more?

(Other definitions for arguing that I've seen before include "in contention" , "Debating - disputing" , "Contending, disputing" .)

I've seen this clue in The Daily Express.

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