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1.
A scale by which a female is sized up. They are not judged on looks but rather they are assigned a 0 or a 1 depending on the judges willingness to have sexual relations with the female. 1 for go 0 for no
Greg: Eh... I'd Say shes a four maybe

Jeff: She's a one on my binary scale!
by JRo June 20, 2006
 
2.
The Binary scale is the theoretical decision making process which ultimately comes into play when judging whether it is more preferable than not, to have sexual intercourse with a given member of the opposite sex at a given time. Just like the real life "sex or no sex" decision, there are only 2 possibilities: 1 representing "yes", and 0 representing "no".

It is a great way to break down the completely arbitrary 10 point rating scale to a level that can be analyzed and compared by all, with relative ease.
John: "Hey Paul, did you see that girl over there with the tight jeans?"
Paul: "Ya man, she was definitely a 1!"
John: "Haha, good use of the binary scale!"


George: "Hey man, guess who I nailed last night?"
Ringo: "Who?"
George: "The groupie with the curly hair"
Ringo: "Awwww man, she is a zero in my books!"
by Brones January 29, 2009
 
3.
Derivative of the 1-10 scale, in which a person or persons are rated in terms of physical attractiveness ranging from 1 (least attractive) to 10 (most attractive).

The Binary Scale is an alternative, simplified version of the 1-10 scale based on the {binary} numeral system in which the number "1" is equated with an "on" or "yes" command and the number "0" is equated with an "off" or "no" command. Thus, by rating the subject a "1", the rater is declaring that he or she would pursue the subject sexually and, adversely, by rating the subject a "0", would not pursue the subject.
Bill: Dude... blonde at the counter, nice rack... binary scale?
Ted: 1. Definitely a 1.

-or-

Rupert: Get a load of that fat chick with the 2 year old... binary?
Cornelius: 0.
by roconnorrekit February 07, 2010
 
4.
A scale by which a female is sized up. They are not judged on looks but rather they are assigned a 0 or a 1 depending on the judges willingness to have sexual relations with the female. 1 for go 0 for no
Greg: Eh... I'd say say Sarah is a 5 in my book.

Jeff: Yeah but shes a 1 on the binary scale
by JRo June 19, 2006