Where on God's green earth?

where on God's green earth

An emphatic way of forming any statement or question beginning with "where" when one has absolutely no idea where someone or something may be. I had no idea where on God's green earth they were taking me. Now, where on God's green earth did I put my wallet? I've searched this house from top to bottom, and I can't find it anywhere!
See also: earth, green, on
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

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.