Bottled Water

We live in an area where it is very hot during the summer, so the children are allowed to take bottled water to school. One day my son was going into the school library, he had his bottle of water with him. The librarian told him to get rid of the water because it was not allowed in the library. He went to the door and poured the water out on the sidewalk outside. When he turned to come back in the library, he was told he could not come in because he had poured the water out on the sidewalk. It took a little explaining to the librarian that he had just been following her instructions and that in the future it would work better if my son turned his bottle into her when he entered the library.