Answer:
What can go up a chimney down, but cannot go down a chimney up?
What has a tongue but cannot talk, gets around a lot but cannot walk?
What's large on Saturday and Sunday. Small on Tuesday, Wednesday, and Thursday, and disappears on Monday and Friday?
What's behind every strong, beautiful woman?
If you're on a diet, smelling a fresh pan of brownies could be described as this.
I am carried by mad animals.