• КАК МЕРТВОМУ ПРИПАРКИ <-a> поможет, нужен и т.п. coll
[как + NP; these forms only; adv (neg intensif); fixed WO]
=====
⇒ not at all (helpful), absolutely not (needed):
- (need sth.) like a hole in the head;
- (need sth.) as much as a cat needs two tails;
- (be <do s.o.>) no good at all.
Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. С.И. Лубенская. 2004.