Trump,79, stood in front of servicepeople of the U.S. Navy and said, “You know, the new thing is magnets. So instead of using hydraulic that can be hit by lightning, and it’s fine. You take a little glass of water, you drop it on magnets. I don’t know what’s going to happen.”

It really does sound like he genuinely doesn't know what magnets are. What is water got to do with magnets?