Harneets Principle
According to bernoulli's principle a high pressure=low wind speed, low pressure=high wind speed. This has been applied to "Harneets principle" with many inspirations means... a women with a nice buttocks automatically has a pretty face, a women with a ugly buttockes = ugly face. This principle has been proven and works, try it urself. This slang is used in High Schools all over N.A.
Women walking down the street, you see her from the back, nice buttocks eh? well then guranteed through this principle this women is gonna be pretty...ugly buttocks, well then just walk the other way! This is called Harneets principle, derivative from the word "Bernoulli''s principle".