This simply asks you to state his features, such as his clothes, hair-color, figure, etc. "The boy or the puppy?" Westerners refer to their pets as "he" or "she" as if the pets were people. If you describe your pet to a foreigner and use "it" referring to the pet, the foreigner will assume that you don't like your pet very much or that you treat your pet poorly.
Is she voluptuous, average, slim, or skinny? It is impolite to refer to a person as "fat", instead say, thick, large, or overweight. Images of very skinny female models on TV and in magazines have made many girls feel overweight and has motivated them to lose more weight than is healthy. Anorexia is a serious problem for young girls in America. The pressure to match the images they see in advertisements is so strong that they starve themselves until they get sick.
Nowadays just about everyone can have green eyes if they want them just by wearing contacts. Some of the more extreme contacts give you "cat eyes" or how about "owl eyes"? Some girls now enjoy matching their contacts to their daily outfits.
YES! When dealing with foreigners it is a good idea to ask this question and then try to repeat back what the foreigner has just said. This tends to cut down on language misunderstandings and leads to better friendships and happier customers!