a cold day in Hell

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a cold day in Hell

An impossible event used as an analogy for something the speaker thinks will never happen. Often used in the phrase "it will be a cold day in Hell before (something happens)." It will be a cold day in Hell when I let you borrow my car! Shelly wants a later curfew? Well, it will be a cold day in Hell before that happens!
See also: cold, hell
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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