Crossword Genius

Lots of workmen make jokes, out for a bit of fun (5)

Ross

I believe the answer is:

gangs

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'for a bit of fun' is the definition.
I can't judge whether this defines the answer.

'lots of workmen make jokes out' is the wordplay.
'lots of workmen make' becomes 'n' (I can't justify this - if you can you should believe this answer much more).
'jokes' becomes 'gags' (gag can mean a joke).
'out' indicates putting letters inside.
'n' inserted inside 'gags' is 'GANGS'.

Can you help me to learn more?

(Other definitions for gangs that I've seen before include "bands" , "Criminal groups" , "Mobs" .)

I've seen this clue in the Evening Standard.
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