To call it a conk is not so funny (5)

I believe the answer is:

snoot

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'to call it a conk' is the definition.
I can't tell whether this definition defines the answer.

'not so funny' is the wordplay.
'funny' indicates anagramming the letters.
'not'+'so'='notso'
'notso' anagrammed gives 'SNOOT'.

'is' is the link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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