Crossword Genius

Shrimpy shrimp went (3-4)

Ross

I believe the answer is:

wee-weed

'went' is the definition.
(ie went to the toilet)

'shrimpy shrimp' is the wordplay.
'shrimpy' becomes 'wee' (both can mean small).
'shrimp' becomes 'weed' (both can mean a weak or puny person).
'wee'+'weed'='WEE-WEED'

I've seen this clue in The Guardian.
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