when an owl screeches, when a child interrupts, when you look again and it isn't there, when the poles shift and the earth rumbles and the voice of God says, 'quit', when pundits prefer, when a light bulb burns out, when your computer reboots because of a power outage. when you have to hide it because of a knock at the door, when moist lips entice you to forget what you are doing, when a vagrant breeze lifts the paper, when you've achieved the fourteenth line, when the dentist is through with you, that's a good time to end a poem