Richard - this is from an Aussie Dictionary

bugger me! = I'm surprised (ns)
bugger me, dead! = I'm very surprised (ns)
to bugger off = to leave (ns)
bugger off! = leave! leave me alone! (ns)
to bugger up = to damage, ruin (ns)
I'm buggered = I'm tired (ns)
go to buggery! = piss off! get out of my sight! (ns)