If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

There is something which is always coming but never arrives?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

I taste better than I can smell. Who am I?

What goes up but never comes down?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

What is always in front of you but can’t be seen?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

How can you leave a room with two legs and return with six legs?

I look at you, you look at me, I raise my right, you raise your left. What am I?