That 'quack' almost killed me by prescribing the wrong medication.
Her doctor turned out to be a real 'quack'.
We could hear the ducks 'quacking'.
(..) I want you to gain their trust. I need to know how to force their cooperation or hammer them hard if they won't. - Am I still with Augustine? - On paper. Yeah, you walk like one of her science pukes, you quack like one, but you report to me. Can you do that for me, son? Hell, yeah, sir. (..)2009 Avatar