An exclamation of surprise or praise. You studied hard, and, by cracky, you got an A! Isn't it funny how that works? By cracky, we've solved the mystery!
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
Rur. By God! (A mild oath, often used to express surprise or approval.) Jim said he'd get the whole house painted this weekend, and by cracky, that's just what he did. By cracky! That thunder sure was loud.
See also: by
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.