Crossword Genius

Exclamation of surprise rock Adelaide footballers? (5,3,5)

Ross

I believe the answer is:

stone the crows

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

'exclamation of surprise rock adelaide footballers?' is the definition.
I can't judge whether this definition defines the answer.

'rock adelaide footballers?' is the wordplay.
I cannot really understand how this works, but
'rock' could be 'stone' (synonyms) and 'stone' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for stone the crows that I've seen before include "My goodness!" , "Expression showing surprise" , "Chesterton sow (anag) - expression of amazement" , "Good grief!" .)

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