Green’s Dictionary of Slang

like hang! excl.

(Aus./N.Z.) a general intensive excl.

[NZ]McGill Dict. of Kiwi Sl. 54/2: like hang euphemistic phrase for ‘like hell’; eg ‘That was a hang of a good movie, eh?’ ‘Like hang it was.’.
[NZ]McGill Reed Dict. of N.Z. Sl. [as cit. 1988].