My 5 year old brother Ashie is very thin. He is not under-weight but his ribs are visible. He has been removing his shirt because he thinks that his ribs are abs. He has walked into my bed-room many times not wearing a shirt and he has said, "Look at my abs!". I have said to him many times, "Those are not abs! They're ribs.". Then he gets very furious with me and screams, "You're just jealous you don't have nice abs like I do!". Then he stomps out of my bed-room...