5.9

Natural Ice beer. (Referring to the ABV of the specific beverage.) Term originated in San Diego, CA.

Person 1: "what you doing tonight?"
Person 2: "drinking that 5.9..."

by pbroots March 23, 2011

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Synonym for average. Derives from 5.9 inches being the average penis length in human males. It is pronounced without the decimal point. ("Five-Nine")

Yo man, how was transformers 2?
Ehh. it was pretty 5.9
Really?
Yeah.. but you got to see Megan Fox panties shot, so its so worth it

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5.9 cummins

The best diesel engine ever made. Puts the Powerstroke and Duramax to shame.

Man I should have bought a 5.9 cummins instead of a 6.0 powerstroke

by anonymous April 01, 2022

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Someone who lasts 30 seconds and blows there load.

by Al Sahir September 30, 2016

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