Question: How do you make a tornado in a bottle?
Option 0: Fill the plastic bottle with water until it reaches around three quarters full. Add a few drops of dish scrubbing  liquid. Put the cap on tightly. Turn the bottle upside down and hold it by the neck.
Option 1: Fill the plastic bottle with water until it reaches around three quarters full. Add a few drops of dish washing liquid. Put the cap on tightly. Turn the bottle upside down and hold it by the neck.
Answer: 1