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.

by Zonyell March 25, 2017

Mr. O'Brien Science Brainrot

The Mr. O'Brien Science Brainrot is a subculture, religion, manuscript, and "disease", based on the life of Russell O'Brien. Due to his high-pitched voice, a voice recorded file of a Mr. Hanky soundin ahh fella went viral within New Zealand, bringing the group into popularity.

"William and Arman's conversion to the Mr. O'Brien Science Brainrot group changed my perspective."
"The legend of O'Brien's breakout of an ISIS facility through rat atom manipulation inspired me to convert to the Mr. O'Brien Science Brainrot"

by Bigwillyoftingletribe April 24, 2025

Finn O'brien

He has a ginormous dick that he uses to stick up his best mate's assholes. He loves AFL so his big dick comes in handy when he uses it as a third leg to kick the ball hundreds of metres. After a 212-0 against Jindalee he gave his whole team free blowjobs and a couple of backshots if they needed them.

Finn O'brien is homosexual

by uptownfunkslut August 17, 2022

Aidan O'Brien

Someone who jerks off 8 times a day, and has a huge head.

Look at that Aidan O'Brien

by michael wardrobe August 21, 2025

James Dobbs O'Brien

A literal god , get on his level like bro this guy is king baldwin IV

e.g James Dobbs O'brien is a literal god
Adam " james get skibidi "
james raises hand " SILENCE "

by sharklord56 April 30, 2024

Taylor Alexis O'Brien

A extraordinary, beautiful girl with more talents and strength than anyone ever seen; a girl born to change the world for the better and has the brightest mind known to men; antonym of mess, ugly, stupid, disgusting

Gosh, you look like Taylor Alexis O'Brien!!

by Jammo2003 November 27, 2019

Michael J. O'Brien

Mejor editor de todo fakeland / mejor Taehyung / y la mejor persona que puedes encontrarte por estos lugares. Also, adjetivo para "precioso, adorable, genial, increíble, sublime, asombroso" y pareja oficial del motociclista Levi Lavòire.

— Lev.

X: Hey, ¿sabes cuál es el nombre del mejor Taehyung de fakeland?

Levi: Sí, Michael J. O'Brien. ♡

by Lavòire, de O'Brien. October 16, 2021