Open Ball

Given a metric space X with a point x in X, an open ball of radius r (a nonnegative real number) is the set of all points y in X such that d(x, y) < r

"Don't kick those open balls"

by Nah-Id-Win November 12, 2023

open the schools

originally said by user c1rca_surv1ve on Twitter(X) in reaction to their friend saying the punk movement was just music, and fashion and had no relationship with politics.

1. person a: "punk is just music!" person b:"open the schools"

by takingbackemily February 19, 2025

open a can o' whupass

A phrase stating, "beat the living shit out of". Commonly paired with: you, it, I'll, etc.

Whupass being a shortcut compound for "whoop ass".

I'll open a can o' whupass on you!

by Veridicule December 26, 2018

Open relationship

It's simple enough, if you seal up the leaks, your relationship will be airtight again, it wont be open. If your landlord or counselor or outside person died, you'd have nobody to seal the leaks but you and your other half.

Not everything needs to be loosened in life, things fall apart that way. An open relationship is one of them.

by Solid Mantis October 7, 2020

Open The Dojo

To start a fight using martial art techniques(MMA).

Mus opened the dojo and beat up those POGs in HQ Platoon. If you know anyone who needs it feel free to ask them what time it is and when they respond with 2:30 etc etc, say "It is time to open the dojo."

by Pocha December 4, 2010

Open Ear

The ability to listen to any music genre and sounds around you and appreciate and like it

Hey man weren't u listening to classical music this morning now extratone and you sleep with harsh noise?

I just have an open ear buddy

by Open Ear November 7, 2024

open that shit up

Open that shit up is usually said at concerts and means make a mosh pit or make the posh pit bigger.

Rapper says to his crowd, “We bout to get lit. Open that shit up!”

by Albertito200 February 18, 2025