The source of this idiom is based on magicians' illusions, where magicians make objects appear or disappear by extending or retracting mirrors amid a distracting burst of smoke. ( source ) The phrase has expanded outside of magic tricks these days and is used to mean deception. 

Compliment Your Mirror Day 7 Simple Ways to Celebrate Compliment Your Mirror Day Stay Out of the Sun Day AMEN!  *wink* The Dangers of Sun Exposure Disobedience Day dis·o·be·di·ence ˌdisəˈbēdēəns noun failure or refusal to obey rules or someone in authority. "he made no allowances for neglect or disobedience of orders" Do you agree or disagree? Agree or disagree? International Plastic Bag Free Day Facts About the Plastic Bag Pandemic 22 Facts About Plastic Pollution (And 10 Things We Can Do About It) Participate in a Plastic Bag Free World Creative Ways to Reuse Plastic Grocery Bags Why Reusable Grocery Bags? These are AWESOME!! I would LOVE to have a set.  I wonder how much shipping is from Australia? Hmmmmm.....Darn they won't even ship to the U.S. The closest thing I found stateside is Hannah Grocery Cart Bag - not near as good but apparently the best we can come up with in the U.S. Sigh.