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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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, 2003
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Where you buy your 40 oz of beer
I have to run to the 4 O sto
by tville August 28, 2003
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A 4 point O gasm is the euphoria you feel when you discover you've just received a 4.0, in a single class or for an entire semester
When I saw this semester's grades for the 1st time, I had a 4 point O gasm, I'm so psyched!!
by RazMutant July 4, 2013
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