Tricky horse

Question: A horse jumps over a castle and lands on a man, then the man disappears. How was this possible?

Question: During what month do people sleep the least?

Question: Two men were on a ship. They were both facing opposite directions, one facing east and the other facing west. But, they were both seeing each other. *WITHOUT MIRRORS* How is this possible?

Question: When is 99 more than 100?

Question: Which eight-letter word still remains a word after removing each letter from it?

Question: What goes through towns and over hills, but never moves?