Consider this, you are at the grocery store and you see a mom feeding her child produce, cookies, crackers etc..from the store inventory that she has yet to pay for. In your mind, is that stealing?
What about the mom that just pops a few grapes into her hungry childs mouth as she passes the produce section with no intention of buying the batch of grapes?
Or the mom that grabs a bunch of bananas and does purchase them, but before she purchases them gives a banana to her child to eat. She is paying for the bananas BUT they are a weighted item and her child has already eaten one so the weight is less, is that stealing?