I had seen this cut and paste before. I know for fact that following three points are NOT true. -You burn more calories sleeping than you do watching television. -American Airlines saved $40,000 in 1987 by eliminating one (1) olive from each salad served in first-class. -A duck's quack doesn't echo, and no one knows why. And, as for, -PEARLS MELT IN VINEGAR! so does many other things. Vinegar is acidic, therefore, if you leave your teeth submerged in vinegar, it too will melt over time.