Urban Dictionary: big O

an orgasm, usually intense.

"He got me to the big O last night.

by Starla Pureheart June 29, 2002

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1. an orgasm, a sexual climax

2. opium

Once I reach the big O, there is no turning back.

by The Return Of Light Joker November 04, 2007

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a giant robot in the anime big O

guy:*looks at watch* BIG O! *robot appears*

by O_oo_O July 17, 2003

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one who is large, cheerful, and especially O-ish in nature

"Big O has got to be the coolest kid in the world.....next to Kearney"

by Big O April 23, 2003

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u do the big O today? u're all funny

many chinx were doin the big O back in the 19th century.

by big O November 26, 2003

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1. An intense Orgasm let off by a female that squirts more than a foot away.
2. A Nice Oz of weed
3. The face she makes when she's riding a big black dick.

1. I got Jen to do the big o when i was eating her out last night, she almost shot me in the eye.

2. Hook me up with a Big o, i got a vaca from work- gonna smoke my brains out.

3. She must've liked it cuz she had a big o on her face the way she was moanin and screamin.

by Speciial Kay April 22, 2009

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Slang for Oklahoma.

I'm a cracker from Big O.

by Stanley Q. Brick June 15, 2003

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