roll a 10-sided dice (or take your post's last digit). your girlfriend's size magically increases such that your height ratio (m:f) to your girlfriend is now 0.48 + 0.09 * (result). If you roll a 10, take the current weekday as your result (tuesday=2). if you didn't have a girlfriend before, you now have two (both pleasant and hot). If it's sunday: all women in the world are at one of the tiers, with your result being the average tier.