As right as rain. As quick as lightning. To make heavy weather of something. When a ship makes heavy weather of a storm it has a particularly rough passage, or journey. When we have a great deal of difficulty with something then we make heavy weather of it.
Lightning never strikes in the same place twice.
He ran like greased lightning. Grease is a thick lubricant. He has his head in the clouds. He cannot think about everyday matters. He's under a cloud.