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slang To leave or depart very quickly or suddenly; to hustle away. Often used as an imperative. I think I hear the police coming. We'd better shag off! Shag off, you filthy cat! Go on, get out of here! A: "Where'd Tom go?" B: "I think he shagged off to get some more cigarettes."
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
in. to depart. I gotta shag. It’s late.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.