Try these riddles. They're quite hard...

What belongs to you but others use it more than you do?...Your name

Every day, a cyclist crosses the border between France and Germany carrying a bag. No matter how much customs officials investigate him, they do not know what he is smuggling.
Do you?....Bicycles

Shoot at me a thousand times and I may still survive; one scratch from me and you will find your prospects take a dive. What am I?...An eight ball

I have a neck, but no head. I have two arms, but no hands. What am I?...A shirt

I weaken all men for hours each day. I show you strange visions while you are away. I take you by night, by day take you back, none suffer to have me, but do from my lack. What am I?...Sleep