Crossword Genius

Unwanted pics of hot-tub men (4)

Ross

I believe the answer is:

spam

I'm a little stuck... Click here to teach me more about this clue!

'unwanted pics' is the definition.
I can't tell whether this definition defines the answer.

'hot-tub men' is the wordplay.
'hot tub' becomes 'spa' (I've seen this in another clue).
'men' becomes 'm' (I can't explain this - if you can you should give a lot more credence to this answer).
'spa'+'m'='SPAM'

'of' is the link.

Can you help me to learn more?

(Other definitions for spam that I've seen before include "Spiced ham" , "Junk emails" , "Junk email" , "Tinned meat - unwanted email" , "unwanted correspondence" .)

I've seen this clue in the Sydney Morning Herald.
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