bung
Meaning
Broken, useless or not working properly; also 'go bung', to break down, fail or (dated) die. Separately, as a verb, to put or throw something carelessly ('bung it in the oven').
Example
My knee's gone bung again.
Origin
The adjective is from Yagara, an Aboriginal language of the Brisbane region, meaning 'dead'.
Variants
go bung, gone bung