A rusty nail placed near a faithful compass will sway it from the truth and wreck the argosy.
Fear tastes like a rusty knife and do not let her into your house.
'WASP' is the only ethnic term that is in fact a term of class apart from redneck which is another word for the same group but who are in the lower social strata so it's inexplicably tied up with social standing and culture and history in a way that the other hyphenations just are not.