Rack Off
Australian SlangDefinition
An Australian slang imperative meaning “go away” or “leave me alone,” often blunt or joking depending on tone.
Examples
"Rack off, mate—I'm trying to study."
"Haha, rack off, ya galah; I'm only having a lend."
"When the mozzies wouldn’t quit at the barbie, we waved our arms and yelled, “Rack off!”"