duff

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be up the duff

slang To be pregnant. You two have only been married for a couple of months, I can't believe you're up the duff already!
See also: duff, up

duff up

1. To physically assault someone; to beat someone up. A noun or pronoun can be used between "duff" and "up." Primarily heard in UK. Tom duffed up the drunken buffoon for making disparaging remarks about his sister. Two would-be muggers tried to rob a member of the Royal Marines, and he duffed them up right good.
2. To defeat an opponent thoroughly and easily. A noun or pronoun can be used between "duff" and "up." Primarily heard in UK. We went into the game underprepared and unfocused, and our opponents rightfully duffed us up.
3. To bungle or ruin something; to mess something up. A noun or pronoun can be used between "duff" and "up." Primarily heard in UK. The boss said I would get the sack if I duffed up the reports again.
See also: duff, up

get off (one's) duff

slang To start doing something, especially after a period of unproductivity or laziness. "Duff" in this usage refers to the buttocks. Grandma will be here in 30 minutes, so get off your duff and move this junk out of the living room! Ted needs to get off his duff for a change and make an effort around here.
See also: duff, get, off

up the duff

Pregnant. Primarily heard in UK, Ireland. You two have only been married for a couple of months, I can't believe you're up the duff already! I was pretty wild during my university years, which is how I found myself up the duff at 22.
See also: duff, up
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

up the duff

pregnant. British informal
1994 Daily Telegraph At 19, he was married (‘only because she was up the duff’ he explains gallantly).
See also: duff, up
Farlex Partner Idioms Dictionary © Farlex 2017

duff

(dəf)
n. the buttocks. Don’t you get tired of sitting around on your duff?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.

get off one's duff

Get moving, become active. This slangy idiom uses duff in the sense of buttocks, a usage dating from about 1840 and at that time considered impolite. It no longer is, at least not in America, and if anything this cliché is a euphemism for still ruder synonyms, such as get off one’s butt or get off one’s ass.
See also: duff, get, off
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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