"Jagoff" (sometimes "jag-off") seems to have originated in Pittsburgh but is also recognized in the Midwest as slang for an inept, feckless, contemptible, or generally worthless person, a loser, a "schlemiel."

The term is almost certainly derived from the verb "jack off" (through noun "jack-off") as in "masturbate," but somewhat like the British use of "wanker," it is usually not a direct comment on self-pleasuring, but more of a general term of contempt or deliberate abuse. Like "wanker," "jagoff" is somewhat vulgar and not to be used lightly, and avoided in cultivated speech, but is recognized by all in the regions in which it has currency.

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The book KILLER CLOWN relates that John Wayne Gacy became especially flustered or angry when called a "jagoff." So the police deliberately used that term to throw him off-balance during interrogation.

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by al-in-chgo August 18, 2010

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A rude assholelike person. originated in pittsburgh
"Yinz were acting like jagoffs the other night, all drunk on Ahrns n'at"
by Beer_jedi October 28, 2003

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Pittsburgh's way of saying "jackoff." An anoying, ass hole.
The light turned green, but that jagoff tourist didn't get going!
by Da fuck do you care? August 25, 2004

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Pittsburghese slang for asshole.
"Dat dem der Stillers is gonna woop dems jagoff-s Eaglesez ass!"
by brownie_8765 October 01, 2005

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A Pittsburgh-ese term for a person who is being a real jerk!
He is such a jagoff when he answers the phone with, "Whaddaya want?".
by Sandy October 20, 2003

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n. A person, usually male, that has an unfavorable personality or annoying habits. Generally implies stupidity or ignorance.
Don't be so surprised he got thrown in jail. He's a jag off.
by Bro May 13, 2004

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Any one who angers a Pittsburgher
That jag off kicked my dog
by Henry VIIIX November 28, 2006

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Pittsburgh slang for anyone irritating, out of line, not in love with the Steelers or not drinking Iron City on a regular basis.
Yinz gonna go donton to watch the Stilers at Lenny's and drink some ahrns or go sit wit the jagoffs and watch football at Chubby's.
by junior November 19, 2003

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