I/O

When referencing a pet, this term stands for Indoor/Outdoor.
That is, a dog or cat that spends as much time outside as it spends inside.

Candy is our new I/O cat -- she sleeps outside at night but comes in the house to play with our other kitties during the day.

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o shit

see shit. Pritty much the same meaning

O shit, I forgot my walet.

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o-zone

The most kick-ass band to make the most kick-ass song, "Dragostea Din Tei"

Numa numa iei, numa numa iei, numa numa numa iei!!!

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pc/o

Meaning Peace Out or your leaving kind of like cya, l8r, or bye

When you leave somewhere you would say pc/o

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o rry

The way the Chinese say "O rly".

Student#1: My teacher is hot.
Student#2: O RRY?

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O bag

When a girl t bag's someone. It is the female equivalent.

I was playing Call of Duty 3 this weekend and I o bagged the shit out of these guys "said by Katelyn"

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The Big "O"

an orgasm; cumming; seeing god

"The Big O" with a woman has been elusive for Pete for many years.

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