If you have it, you want to share it. If you share it, you won't have it. What is it?

If lightning strikes in an orchestra, who is most likely to get hit?

What goes down but never goes up?

The blue man lives in the blue house, the red man lives in the red house, who lives in the white house?

If everyday rains in the month of January and February, how come that there is more rain in January than in February?