bonk means the same thing in NZ english as in Aussie english and yeah, I have a juvenile mind too - most cycling or running discussions on bonking make me laugh.
Even worse, one time when I was in Hawaii during elections there was a women with the surname of 'Bonk' running for office (it may even have been for governor) and her election advertising said 'Bonk for Hawaii' - now that one really brought out my juvenile mind

