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be off (one's) chump

To be crazy. In the UK, "chump" is a slang term for "head." You're off your chump if you think that plan will work.
See also: chump, off

chump change

A tiny, trifling, or inconsequential amount of money. To most people, $2,000 is a lot to spend on anything, but to the country's mega rich, it is merely chump change. I'm only getting paid chump change for all this hard work I'm doing.
See also: change, chump

go off (one's) chump

To become crazy or mentally unsound. Usually used hyperbolically. I think Jane's grandmother has gone off her chump lately. I'm going to go off my chump if I have to hear that blasted song once more! You want to quit your job so you can sell bees for a living? Have you gone off your chump?
See also: chump, go, off

go off (one's) head

To become crazy or mentally unsound. Usually used hyperbolically. I think Jane's grandmother has gone off her head lately. I'm going to go off my head if I have to hear that blasted song once more! You want to quit your job so you can sell bees for a living? Have you gone off your head?
See also: go, head, off

go off (one's) rocker

To become crazy or mentally unsound; to become extremely foolish or foolhardy. I'm going to go off my rocker if I have to hear that blasted song once more! I think Jane's grandmother has gone off her rocker lately. You must have gone off your rocker if you think that's a good idea!
See also: go, off, rocker

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.

chump change

A trivial sum of money, a trivial matter. For example, Dave was sick of working for chump change; he wanted a decent salary, or Don't put that on the agenda; it's chump change. This expression uses chump in the sense of "a fool or sucker who should be ignored." [Slang; 1960s] Also see chicken feed.
See also: change, chump

off one's head

Also, off one's nut or rocker or trolley or chump . Crazy, out of one's mind, as in You're off your head if you think I'll pay your debts, or I think Jerry's gone off his nut over that car, or When she said we had to sleep in the barn we thought she was off her rocker, or The old man's been off his trolley for at least a year. The expression using head is colloquial and dates from the mid-1800s, nut has been slang for "head" since the mid-1800s; rocker, dating from the late 1800s, may allude to an elderly person falling from a rocking chair; trolley, also dating from the late 1800s, may be explained by George Ade's use of it in Artie (1896): "Any one that's got his head full of the girl proposition's liable to go off his trolley at the first curve." The last, chump, is also slang for "head" and was first recorded in 1859.
See also: head, off
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. 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


n. a stupid person; a gullible person. See if that chump will loan you some money.

chump change

n. a small amount of money; the kind of salary or amount of money a chump would work for. I refuse to work for chump change! I want a real job.
See also: change, chump

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.

go off one's chump/head/rocker, to

To go crazy; to become insane. The oldest of these three expressions is “off his head,” which was current although slangy by the time Thomas Hood wrote The Turtles (1844), “He was ‘off his head.’” The word chump became British slang for “head” in the late nineteenth century; subsequently, “off his chump” was used several times by Shaw, in Pygmalion and Heartbreak House. Off one’s rocker comes from the same period, but its origin is more puzzling. One writer suggests it may indirectly allude to the elderly, associated with both rocking chairs and diminished mental capacity. Yet another variant is to go off one’s trolley, which alludes to a motorman getting off a streetcar to reposition the trolley wheel on the overhead wire that carried electric current to the car’s motor. To be disconnected from this power source came to mean becoming crazy, a usage dating from the late 1890s. With the demise of streetcars in many American cities, this expression is heard less often today.
See also: chump, go, head, off, to
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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He narrated that he talked to Chump on the phone on Jan.
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ASHAMED as I am to be drawn into the love lives of the rich and not-so-famous, I couldn't help but feel some empathy towards the ex-fiancee of Celebrity Big Brother chump Preston this week.
Of course, that's just chump change to billionaire Soros.
Granted, Fox News' chump change ratings--like those of all the cable news channels--is more a testament to audience fragmentation than to the overriding will of the American people; but if news junkies really are fed up with palaver, they've got a funny way of showing it.
Some people have criticized these contributions--suggesting that $25 million is little more than chump change to multibillionaires such as Gates.
To the Washington bureaucrats, a few billion dollars is just chump change.