Where on God’s green earth?

Where on (God’s green) earth?

interrog. (Exactly) where? (An intensive form of where. See examples for variations.) Where on God’s green earth did you get that ridiculous hat?
See also: green, on
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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