Dennis O'neil

THe coolest teacher in the universe. So awesome that 1/3 of his class dressed as him on a friday. Sometimes he will give us goldfish. He is the greatest Social studies teacher. He always has his pocket constitution and volleyball rulebook.

He is so cool, he must be a Dennis O'neil.

by Coolguy_27 November 1, 2019

O'Neil

someone who will literally eat your ass

Yo watch out, O'Neil is gonna eat your ass

by -not oneil November 22, 2021

O'neil

The last name of a kid that is a fucking dumbum and a brat. He will most likely kill you if you make funny jokes about him or he will just tell on the whooolleeee classsssss.

Did you see that guy having a temper tantrum? Yeah he must be an O'neil

by poopybuttcheek March 2, 2020

ash o'neil

ash is a slurry

oh look at me i am a slurry

by luke November 19, 2003

O'neill

A try hard, someone with all the gear and no idea.

A bald headed man with glasses who has is an interest in aqautics - he wears a full O'neill wetsuit to the beach.

Some may call me an O'neill for trying so hard to write this definition.

"He's such an O'neill"

by O'neill detective January 9, 2025

Alexandra O'Neil

The hottest and most beautiful girl I've ever met and who I love very much.

You're just so great Alexandra O'Neil!

by JackMehoff69420 February 15, 2025

Quinn O'neill

This is the type of kid who hops the border back and forth in a daily basis with ease, while playing salsa music from a junky ass boom box on his back. This species of people also have a bad understanding of English, and often respond with "No quema cuh" when they are bamboozled. Typically when these people grow up they go through lots of no quema cuh trucks because they always crash them into curbs.

Aye bro that dude climbing the fence reminds me of Quinn O'Neill

by No quema cuh March 27, 2023