O'Brien 

Descended from the progenitor, Brian Boru - THE LAST GREAT HIGH KING OF IRELAND: the greatest military leader the country has ever known.

Two mottoes have been associated with the O'Brien clan: firstly, Vigueur de dessus: 'Strength from above' and secondly, 'Lamh laidir an uachtar' 'The strongest arm uppermost'

O'Brien by obrienwrite May 20, 2008

O'Brien 

Descended from the progenitor, Brian Boru - THE LAST GREAT HIGH KING OF IRELAND: the greatest military leader the country has ever known.

Two mottoes have been associated with the O'Brien clan: firstly, Vigueur de dessus: 'Strength from above' and secondly, 'Lamh laidir an uachtar' 'The strongest arm uppermost'

O'Brien by obrienwrite May 20, 2008

O'Brien 

a high official in the Ministry of Love in "1984." He tortured the protagonist, Winston Smith, into submission to the totalitarian "Party." O'Brien was played in the film by Richard Burton; it was Burton's last role.

Winston was struck, as he had been struck before, by the tiredness of O'Brien's face. - George Orwell, "1984"

O'Brien by Dr. Heywood R. Floyd January 13, 2008

O'Brien 

a white suprecemacist leader that George Costanza impersonated to get a free ride in a limo. George's lie nearly cost him his life, as he faced being torn limb-from-limb by an angry mob, or being shot by angry neo-Nazi's.

We're not sure how he got out of this dilemma, as the show ended with him still in grave danger, but he seemed okay in the next episode.

George: I am not O'Brien! I am not O'Brien! I'm not O'Brien!

O'Brien by Dr. Heywood R. Floyd May 5, 2007

O'Brien 

originating in Middletown, Rhode Island, O'Brien is arguably one of the worst math teachers to ever live. He style, looks, and personality are some of the worst you will ever see. His teaching style consists of going over the material until he remembers how to do it well enough to grade a quiz, then quizzing. Whether or not his students understand it means nothing to him, and for this reason he is possibly the most hated teacher on the whole Aquidnick Island.

Extremely fond of the number "0", as it is the only grade he enjoys giving.

Also known to creep on certain innocent girls through entire class periods/school years

Student A- Fuck man, I have O'Brien for Honors Algebra II!
Student B- Oh, dude, that blows. Enjoy failure...

O'Brien- So you put this here, and don't skip steps, OR ITS A ZERO! Oh wait, I did it wrong...and I skipped a step...ITS STILL A ZERO FOR YOU!

Student 1-Wait, I don't understand this, could you go over it?
O'Brien-NO! Quiz time!

O'Brien by ih8himlol April 11, 2010

O'Brien 

Dusty crusty ugly little dude he has an ugly sister he stinks he looks at girls botty in gym class he needs to get smacked he thinks he's cute but he's cute but he's not he has a 5th grade friend in he is in 7th grade he likes an 9th grader and he likes a 6th grader

O'Brien needs to get a haircut.

O'Brien by Zonyell March 25, 2017

O.brien

A lil bitch every one hates and he is not smarts he ugly and he is bald he a bald lil bitch

Boy: Hey look O.brien is a bitch

O.brien by Skgsjshseh bum November 22, 2021