Aussie slang for arse
. Derived from the word cloaca
which is a bird's vent, i.e. a bird only has one hole to shit, piss and root with. This amazing all-in-one hole is located on the underside of a bird's tail.
Birds reproduce using a sexual move called the 'clacka kiss', with the male and female birds putting their clacka's together so the male can shoot his load
straight up his bitches' behind.
Goddam if Brett keeps on eating my chips I'm gonna kick him straight up the clacka!