The following are results from an OZ-words Competition where entrants were asked to take an Australian word, alter it by one letter only, and supply a witty definition. Clearly, you need to be an Aussie to understand.
Billabonk: to make passionate love beside a waterhole
Bludgie: a partner who doesn't work, but is kept as a pet
Dodgeridoo: a fake indigenous artefact
Fair drinkum: good-quality Aussie wine
Flatypus: a cat that has been run over by a vehicle
Mateshit: all your flat mate's belongings, lying strewn around the floor
Shagman: an unemployed male, roaming the Australian bush in search of sexual activity
Yabble: the unintelligible language of Australian freshwater crustaceans
Bushwanker: a pretentious drongo, who reckons he's above average when it comes to handling himself in the scrub
Crackie-daks: 'hipster' tracksuit pants.
And for the Kiwis amongst us:
Shornbag: a particularly attractive naked sheep