Beast from the East is used to describe an ugly looking woman, similar to minger, and
skank.
Some Beast from the East features may include; obesity,
disgusting teeth, bingo wings, acne, milk bottle glasses, shit clothes, scabs, squint eyes, female version of Sloth from The Goonies, etc.
It is thought to originate in med-evil times, when nasty looking females would be banished to far off lands.
Oh
man that
girl is a Beast from the East, she was damn ugly!
You just kissed a Beast from the East, you must be super
drunk!