8 year old that weights 132 lbs! My 9 year old weighs 60 so that weight just blows my mind. If this child is throwing up after eating, there is definitely something wrong. What really worries me is that he was doing it as a baby and the fact that the mother sees nothing wrong with it. I have no suggestions for you but wanted you to know that I do agree there is something wrong. The mother needs to get the message that he needs to be seen by a doctor and this problem needs to be addressed. Have you talked with her in more detail? What about your cousin's mother or another family member getting involved? Best of luck.