you can bet your boots
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Related to you can bet your boots: you can bet your bottom dollar
you (can) bet your boots
You can be absolutely certain that something will happen. Sometimes used ironically. You bet your boots I'm going to that concert—I've been saving up for my ticket for months now! Oh, you can bet your boots that Kevin will be late tonight—he's never on time! I lost my umbrella, so you can bet your boots that it's going to rain soon.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
you can bet your boots (or bottom dollar or life)you may be absolutely certain. informal
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