May Puzzle - The Ball

Congratulations to this month's winner -

Kris from Kaiser Permanente! 

Answer:

Throw it straight up in the air.

Question: How can you throw a ball as hard as you can and have it come back to you? It isn't caught and returned by anyone, it doesn't hit anything and there is nothing attached to it.

Send your answer to puzzle@lansystems.com.  All correct answers will be entered in our monthly drawing.