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

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

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 1, 2022

Someone who lasts 30 seconds and blows there load.

by Al Sahir September 30, 2016