I Tried to Catch Fog Yesterday but Couldn't Catch It.

Fog is cloud which is kind of on the ground. A mist is like fog, but it's thinner. You might find mist er hanging over a pond of water in the morning. That's mist. So i tried to catch fog yesterday and couldn't. I told you that dissecting the joke would kill it. But anyway, it's quite acute. Quite like that one.