Patsy...that's lovely.....as are smiles.....you see what happens when somebody is rude to you...or when a motorist makes a mistake and you have to stop or swerve....just smile and blow a kiss instead of being grumpy or beeping your horn....and the world's cheerier.....well for some of us..... ;-)
When I first seen it, I thought it was written by Spike Milligan. Apparently, this was one of many about smiling that he recited. Original author unknown.
When I'm driving and not in a hurry, in heavy traffic I enjoy letting people out of side roads - just to see the shock, then gratitude, on their faces. Cheers me up, and I smile at them.