My daughter is 11 and has the opposite problem. She has to guard her lunch because the kids were swiping her food when she would look away. She is a pretty strong headed person and point blank tells them that she could go low and pass out if they take her food. She takes a pretty healthy lunch and usually also has a treat or Cheetos in there that others really want. I told her if they didn't quit I could come explain to the class why they can't do that. Apparently they have stopped.