There's a tiger sleeping in the back of my neck...

There's a tiger sleeping in the back of my neck. Sometimes it purrs; others it talks or walks in its sleep. There are moments when one can not know if it is dreaming or is dead: because one can not know anything for sure. I sleep its dream when it rains. It sleeps mine when I'm aware. We both know about each other's drift, we both know we live the spare instants of a sparrow.