Judging boobs on size alone is like rating a restaurant based on portion size. When it comes to breasts, everyone has their own preference. With that said, a combination of size and perkiness seem to be the most popular criteria for judging boobs. While it may be difficult to measure perkiness, an estimate of size can be made by averaging the cup sizes of bras sold in each nation. Of course such a system has its flaws. It doesn't take into account the average age of the population, the frequency of breast implants, or the women who do not wear bras. Also, such a system ignores the general principle that the larger the cup size, the larger the woman. Breasts are not like penises; they expand with a woman's weight. As such, a measure of the countries with the largest cup sizes may simply be a measure of the nations with the largest women.