Crossword Genius

Why I age or badly misbehave? (2,7)

Ross

I believe the answer is:

go haywire

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'misbehave?' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'why i age or badly' is the wordplay.
'badly' indicates anagramming the letters.
'why'+'i'+'age'+'or'='whyiageor'
'whyiageor' anagrammed gives 'GO HAYWIRE'.

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