o2 

chemical abbreviation for oxygen; as there are 2 oxygen atoms in a molecule.

why does life exist?

Because of o2, we need oxygen to live

o2 by me or em August 19, 2009

O2 

The air control room in Among Us. The name comes from O₂, the chemical formula for an oxygen molecule.

It wasn't me; I was in O2.

O2 by Mr. Twinkieface November 20, 2020

O2 

A combination of orange juice and orange soda, when, used together create a unique flavor and an energizing drink. Also very nutritious.

I was up late at a sleepover the other night, so we made some O2, drank it all up, and good times were had by all

O2 by Kodiak101 May 12, 2008

O² 

1) A mobile phone company.
2) Oxygen.

1) "See what you can do. O²."
2) "I NEED OXYGEN!"

O² by Soiled Undergarment August 18, 2003

O2 

A bunch of useless cock juggling thunder cunts... that will fuck up your order (or even stop your order)... after wasting your time for up to 2 weeks... with no communication skills what so ever O2 will ruin your day just for the amusement of their staff.

I've been completely O2'ed they hurt my ass too.... the bastards!

O2 by The Shop Front Boys July 31, 2009

O2 

When you can't live without someone, you call them O2 because you can't live without them (like you can't live without oxygen).

"Ugh I like him so much, he is so O2"

O2 by chemistrygirl321 March 10, 2018

O2 

To leave a scene so fast no one notice your gone.

P1: where did you go?
P2: I did an o2 move on yall.

O2 by All his November 12, 2017