Drunk, half-cut blokes imbibing too much (6)
I believe the answer is:
blotto
'drunk' is the definition.
(slang term)
'half-cut blokes imbibing too much' is the wordplay.
'half cut' suggests halving the letters.
'imbibing' is an insertion indicator.
'too much' becomes 'OTT' (short for over the top).
'blokes' halved is 'blo'.
'blo' placed around 'ott' is 'BLOTTO'.
(Other definitions for blotto that I've seen before include "Three sheets to the wind" , "Drunken" , "Blind drunk" , "Unconscious from drink" , "Bombed" .)