A grandmother was shopping with her grandson... A grandmother was shopping in town with her 4 year old grandson. As they sit down on the bus home, she passes him some chocolate. After he eats it, he asks for another piece. ""No dear. If you eat too much chocolate, you'll get fat."" At the next stop, a heavily pregnant lady gets on to the bus. The boy gets up and yells: ""I KNOW WHAT YOU'VE BEEN DOING!""