Best hard riddles for teens

Why don't tigers like fast food?

A lawyer, a plumber and a hat maker were walking down the street. Who had the biggest hat?

Who makes it, has no need of it. Who buyes it, has no use for it Who uses it can neither.

I have lot of memories, but I own nothing. What am I?

What is the first thing a storm cloud puts on after a shower?

A bus driver was heading down a street in Colorado. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

What was the biggest island in the world before the discovery of Greenland by viking Erik the Red?

I am a home of knowledge, both banal and profound. In grand halls and small homes I can be found. I am a home for things of many leaves, but my many residents are not living trees. What am I?

Thirty white horses on a red hill. First they champ, Then they stamp, Then they stand still. Who are they?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth I am dissolved into air. What am I?