Crossword Genius

Showed me dad's rotten bananas (12)

Ross

I believe the answer is:

demonstrated

'showed' is the definition.
('demonstrate' can be a synonym of 'show')

'me dad's rotten bananas' is the wordplay.
'bananas' indicates anagramming the letters (informal term for mad).
'me'+'dads'+'rotten'='medadsrotten'
'medadsrotten' anagrammed gives 'DEMONSTRATED'.

(Other definitions for demonstrated that I've seen before include "shown up" , "made public protest" .)

I've seen this clue in The Telegraph.
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