Answer:
You cannot keep me until you have given me. What am I?
With three eyes and as black as night I frequently knock down ten men with a single strike!
What has a thumb and four fingers but is not alive?
Some try to hide, some try to cheat, but time will show we always will meet.
The more of this there is the less you see. What is it?
The answer I give is yes, but what I mean is no. What was the question?