1. How can you leave a room with two legs and return with six?
2. What is black when you buy it, red when you are using it and grey when you throw it away?
3. There is a clerk in a butchers shop. He is five feet ten inches and he wears size thirteen shoes. He has a wife and two children. What does he weigh?
4. They have not flesh nor feathers, nor scales, nor bones. Yet they have fingers and thumbs of their own. What are they?