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
by me or em August 19, 2009
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2nd largest British mobile network. As of 2016 owned by Teléfonica.

O2 was the biggest network until T-mobile and Orange UK merged to form EE, part of BT. O2 responded by launching their Priority service and "Be More Dog" advertising
How have you got full 4G here - who are you on?

by CSD123 October 31, 2016
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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.
by Mr. Twinkieface November 20, 2020
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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
by Kodiak101 May 12, 2008
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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!
by The Shop Front Boys July 31, 2009
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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"
by chemistrygirl321 March 10, 2018
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To leave a scene so fast no one notice your gone.
P1: where did you go?
P2: I did an o2 move on yall.
by All his November 13, 2017
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