Donald Trump on Friday made a confusing comment about magnets, prompting mockery around the internet. The former president said at a rally that he was largely ignorant about magnets, raising the issue in connection with so-called “magnetic elevators.” “They had an almost billion-dollar cost over on the magnetic elevators,” Trump said at the Iowa hearing on . “Think of it. Magnets. Now, all I know about magnets is this: give me a glass of water, let me drop it on the magnets. That’s the end of the magnets.” POLL: Should Trump be allowed to run for office? The internet was quick to react to the …