Sure I knew this one right away! 😯
All these words are the last names of the characters in the game of Clue (Cluedo).
1. Colonel Mustard
2. Professor Plum
3. Mr. Green
4. Mrs. Peacock
5. Miss Scarlet
6. Mrs. White
The thunder comes before the lightning; the lightning comes before the clouds. The rain dries everything it touches. What is it?