What does Bag system mean?

Bag system meaning in Urban Dictionary

something or nomenclature useful for labeling the power of unsightly certain woman is susceptible to. A female is ugly on one of any three levels. Initially, the single-bagger, or a woman unsightly adequate to merit one bag on the mind during intercourse; 2nd, the two-bagger, or a lady who's so unsightly that a bag is necessary to be put over both her mind and yours during intercourse, last but not least, the three-bagger; a woman therefore completely atrocious that not only do both you and her necessitate bags over your minds during sex, but so does anyone who may (god forbid) be looking in through the screen.