Top Definition
4-o
A 4-o is another word for a fourty ounce beer. Pronounced four-o or depenting on regional origin fo-o
Let hit the sto and get a 4-o.
I was two 4-o's deep last night man was I on one.
by B-dub (refers to my age) November 16, 2005

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4-O
A bottle of malt liquor or beer that contains 40 ounces.
Yo, I got cock-eyed of two and a 1/2 4-O's and wrecked my 87 Dodge.
by Jonny Fromundah December 29, 2002

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt