What is the king’s favorite type of precipitation?
Hail, of course!
What is another king’s favorite type of precipitation?
Reign!
Listen here, nimrod. The joke plays on words, you simpleton. "Hail" sounds like "hail," as in to greet someone, and "reign" sounds like "rain." Kings, you see, are often hailed, and they reign over their kingdoms. What are you, a donkey?