One who writes obnoxious and false information to incite a heated argument.
Curtis123 writes foolish things on the HawkeyeReport, what a jagoff!
by Hawk fan November 21, 2016
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"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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Jagoff- 1.Famous word used by Joe Pesci in the film "Casino". 2. A word used by Italians or North Eastern Americans to describe a Jackass or a Jerkoff. 3. A stupid fucking oaf.
That fucking lazy jagoff just stole my toast from the breakfast table.
by Master JP March 25, 2004
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Chicago original.
Mutation of jerk-off.
Go back ta da nortside ya jagoff.
by southsidesmitty September 25, 2004
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mostly midwest synonym fo jerk-off
People who cut off people in traffic are jagoffs.
by Jim Bob September 12, 2003
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Coach Cal: "You must be from Western PA. Where you from?"

Buccigross: "Pittsburgh."

Coach Cal: "OK, so basically you're a jagoff."
by SH622 January 27, 2010
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one who performs annoying or irrtating but ultimately benign actions.
He took food from my fridge again: he's such a jagoff!
by Minkus June 25, 2003
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