The dumb LW2 failed to mention a very crucial piece of data: the age of her son. Was he 4? 12? Age makes a big difference. A four year old (or close to that age) calls things as they see it. Older children will say "You're fat!" to be mean. If this boy is very young, he may have just been innocently exclaiming an observation, as he would if he saw a big dog: "Your dog is big!"