Green’s Dictionary of Slang

dropkick n.

[rhy. sl. = prick n. (3)]

(Aus./N.Z.) a general term of abuse; also attrib.

[Aus]J. Byrell (con. 1959) Up the Cross 9: ‘[H]e got holda one drop kick by the left warwick and yanked him into the whisper and stamped on his loaf with his right plate’’.
[Aus]B. Moore Lex. of Cadet Lang. 125: drop kick [noun] a fool, a fuckwit, a total failure, a hopeless case, a wipe-out, an utter drongo.
[Aus]T. Winton Lockie Leonard: Scumbuster (1995) 144: ‘The Ninja Turtle?’ ‘No, you dropkick, the painter.’.
[Aus]R.G. Barrett Mystery Bay Blues 1: Les might have been a bit of a dropkick in Leaving Bondi.
[NZ] McGill Reed Dict. of N.Z. Sl.
[Aus]P. Papathanasiou Stoning 62: Manolis would [...] cruise the streets with his dropkick mates.