Occasionally, cats will have actual stones form in the bladder that cause the obstruction. (bracpet.com)
It doesn't mean that we can eternal relate to those body parts best when we relate to actual stones pillar, flora and fauna. (nakedpastor.com)
Perhaps if you knew a little more about what the Church was about, then you would at least be in a position to throw actual stones (i.e., reasoned theological or sociological arguments against the Church). (religion.blogs.cnn.com)