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A person who is so incredibly ugly that they become attractive.
Everyone wants to sleep with them.
Also can sometimes be referred too as a "MEGA-SIX" but only in extreme cases, like Wendy.

*Sees random really ugly person across the street*

Emily Kirkham: SIX!!
by sixman April 18, 2009
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22
When someone thinks they are a ten on the hot scale and they are in fact to the rest of the world a 6 or below;it is also highly contageous and many a time sixes will clump together in groups only fueling more of each others dellusional thoughts.
Person 1: Omg did you see Clara and Tabor today they were just sitting around talking about how beautiful they were!
Person 2: Oh wow again I wish they would just look in the mirror and see that they are not that hot.
Person 1: I know they are total sixes.
by brownviking February 04, 2010
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23
Ya'll best be learnin' what ghetto slang is...

A "six" is not a 6 cylinder car.
A "six" is not a top of the line mercedes.

When rappers refer to a "six" they are speaking about a six figure item (typically a car). Why the hell would Jay-Z rap about a buick, pacer or pinto (all of which are available in 6 cylinders)????
See the 20's looking mean on the six.

We all know a 20 is a 20 inch rim. It's on a six figure car, not a six cylinder car.
by Troy G December 07, 2006
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24
the cops are referred to as five oh, so to be on the six, you are one ahead of the cops
by shanu May 26, 2005
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27
A term used by ROBLOX Oders to have sex. Since ROBLOX is a game for (mostly) young audiences, words including sex is changed to ###, thus, the existence of the term.
Wanna have six?
by MyPseudonym092 November 09, 2018
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