It's not right to take someone else's sandwich.
James' blood sugar is running low while walking on a sidewalk, and he feels he will pass out if he does not eat.
James wants to get food from someone fast.
James runs up to the picnic and explains his situation before asking for a small sugary snack.
James runs up to a nearby picnic and grabs someone's sandwich to help his blood sugar.
The people from the picnic are understanding and let James eat more with them.
James is chastised for not asking and James feels humiliated.