Riddles

One night, A king and a queen walk into a castle. Nobody else came in and nobody else goes out. In the morning, three people leave the castle. How did this happen?

What bow has no arrows?

How did the elf get indigestion?

What do you call a witch in a desert?

What has 4 wheels and flies?

One night, a king, and a queen went into a castle. The next morning three people came out.

Who were they??