Why was the asian guy's eyes slanted? Your question is a very valid one that most people often wonder, but never really ask. It's called an epicanthal fold...please, NOT "slanted eyes". Many people consider this to be a derogatory description of the descendents or those of Eastern Asia (as do I, being half Korean), but most people are unaware of this and say it anyway. I'll assume you didn't know this. :) The epicanthal fold (what we have) is something that all babies are born with, but those who may not be of Eastern Asian origin will eventually lose. The purpose of this "fold" is to protect the eyes from extreme sunlight and cold weather. Most people of the this part of Asia originated in Mongolia where the weather conditions were very cold and harsh. Also, with most of this population, you'll notice that there exists some extra padding below the eyes as well. With all that white snow and the sunlight reflecting off of it, don't you think with time our bodies would develop some sort of defense for one of our most valued senses--our sight? It makes sense, doesn't it? Also, notice, that the farther south you travel in Eastern Asia the "rounder" the eye gets (their is less evidence of the epicanthal fold), since the climate gets warmer the farther south you go. Evolution, baby. So, Eastern Asian eyes are NOT really slanted. They just appear to be. Instead they just have that extra fold above the eyes that make them appear "thinner", if you will. If you want to sound halfway intelligent, please don't use the description "slanted eyes" anymore, since this will only make you seem like somewhat of a bigot (racist). (You might say it around the wrong person one day.) Sorry, but I'm just trying to give you some good advice. I hope I helped.