Answer:
Can you think of a crime that is punishable if attempted but not punishable if actually committed?
They come in many varieties: Red, Black, Dead, and Caspian to name a few.
What gets wetter and wetter the more it dries?
What do you have in December that you don't have in any other month?
What is it that after you take away the whole, some still remains?
What never gets any wetter no matter how hard it rains?