Dick reading for fun (9)

I believe the answer is:

diversion

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'for fun' is the definition.
(thesaurus)

'dick reading' is the wordplay.
'dick' becomes 'di' (I can't explain this - if you can you should give a lot more credence to this answer).
'reading' becomes 'version' (a reading can be an interpretation or version).
'di'+'version'='DIVERSION'

Can you help me to learn more?

(Other definitions for diversion that I've seen before include "Alternative route" , "Amusement -- temporary redirection" , "entertainment" , "Detour" .)

I've seen this clue in The Times and The Sunday Times.

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