A Doctor was addressing a large audience on correct diet. 
  "The material we put into our stomachs is enough to have killed most of us 
  sitting here years ago. Red meat is awful.. Soft drinks corrode your stomach 
  lining.. Chinese food is loaded with MSG. High fat diets can be disastrous, 
  and almost no one knows for sure the long-term harm caused by the chlorine 
  in our drinking water. But there is one thing that is the most dangerous of 
  all and we all have, or will, eat it. Can anyone here tell me what food it 
  is that causes the most grief and suffering for years after eating it?" 
  After several seconds of silence, a 75-year-old man in the front row 
  raised his hand, and softly said, "Wedding Cake!"