Idiot gets nothing twice in turn (3)
I believe the answer is:
oaf
'idiot' is the definition.
(I've seen this before)
'nothing twice in turn' is the wordplay.
'nothing twice' means two replacements for 'nothing'.
'nothing' becomes 'O' (looks like zero - 0).
'nothing' becomes 'fa' (slang term - sweet Fanny Adams).
'in turn' shows that the letters should be reversed in order (letters turning around).
'fa' reversed gives 'af'.
'o'+'af'='OAF'
'gets' acts as a link.
(Other definitions for oaf that I've seen before include "buffoon" , "Stupid lout" , "one of thick character" , "A clumsy boor" , "Lout, lummox" .)