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15.
Not necessarily a bad thing. A Gobshite, for better or worse, talks incessantly without provocation or purpose and most often without principle. The term Gobshite is Irish in origin, from the old Irish gob, or mouth, and shite, or shit. Shite of the Gob is the primary foundation of the word. It first appeared in print in the “manuscript glossary of US Navy terms” as a word for enlisted men, comparing them to tobacco spit. TheGobshite.com uses the word to capture a wide range of characters. In their first “Gobshite of the Month” they awarded Gary Busey with “Most Amusing” while also awarding Dr. Phil McGraw with “Most Annoying”. They also refer to their staff as Gobshites. Rightly so, a Gobshite for all their yammer can be quite entertaining, and therefore the term may be used as one of endearment.
(From TheGobshite.com) … TheGobshite.com’s first ever “Gobshite of the Month” award for “Most Amusing” goes to Gary Busey... If Gobshite was a type of stone than Busey was carved from it. He goes off on unprovoked rants, promotes unfounded (if at all preconceived) conspiracy theories, and gives “advice” in the form of acronyms for virtually every concept entered into the dictionary.
by Bogshite July 10, 2008
 
16.
Irish slang for an idiot. Also Goby, (short for Gobshite)
I dont want anything to do with him, he is such a gobshite.

Look at that goby over there.
by Billy-boy August 10, 2007
 
17.
Someone that will lie so much there words mean shit and so gob shite was invented hoora!
Terry: I got my new bike.

steve: Ya i bet were is it.

Terry: seriously at home i swear.

garry: Ha ha man your such a gob shite.
by rodam July 11, 2006
 
18.
Someone, who constantly pontificates on subjects to the boredom of those around them.
He's such a gob shite

variation: What a load of gob shite!
by libbytech January 18, 2004
 
19.
The average Manchester United supporter.
Manchester United fan: 'ow many trophies have dirty leeds won aye lol?"
Me: Shut it you gobshite and go support Leyton Orient or some other team in London.
by The Mad Hatter 55 November 05, 2009
 
20.
Someone who talks incessant shite in a lame attempt to make themselves look good, whilst actually making a complete twat out of themselves.
GI.GHoD, GI.Diamorphene, in fact most of GI squad are gobshites.
by APC Camper February 07, 2006
 
21.
Noun. Irish origin.
From the Irish "gob", meaning "beak" or "mouth", and the Irish "sial", meaning "soil".

"Gobsial" (which eventually became "gobshite") literally translates as "mouth of soil" and means a person who talks a lot of nonsense, a fool.
"Louis, I agree with Simon, you're an awful gobshite."
by PaddyPauper November 18, 2011