Crossword Genius

Ian drunk? Tiddly before you know it! (2,1,6)

Ross

I believe the answer is:

in a minute

'before you know it' is the definition.
(both can mean very soon)

'ian drunk? tiddly' is the wordplay.
'drunk?' is an anagram indicator (I've seen 'drunk' mean this).
'tiddly' becomes 'minute' (minute can mean small or tiddly).
'ian' with letters rearranged gives 'ina'.
'ina'+'minute'='IN A MINUTE'

(Another definition for in a minute that I've seen is " Inuit name for just a mo, be right with you".)

I've seen this clue in The Telegraph.
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