off (one's) chump

(redirected from off their chump)

off (one's) chump

Crazy or insane. He must be off his chump to pay that much money for that old car. Am I completely off my chump for starting a business in this economy?
See also: chump, off
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

off your chump

crazy. British informal
The literal sense of chump meaning ‘a broad, thick block of wood’ led in the mid 19th century to its humorous use to mean ‘head’, with the implication of ‘blockhead’.
See also: chump, off
Farlex Partner Idioms Dictionary © Farlex 2017

off one’s chump

mod. crazy; nuts. Am I off my chump, or did that car suddenly disappear?
See also: chump, off
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
And anyone who argues the trend towards working mums has nothing to do with it is off their chump. Children need to be brought up by their mothers, not by child-minders or nurseries.
These martyrs to their Manolo Blahniks and Jimmy Choos are off their chumps.