Plastic Straw Becomes Magnetised

Everybody knows that magnets will only attract metal objects. But here is a demonstration of how a plastic straw can be attracted to a plastic highlighter, chosen freely by the audience. There are two straws from which to choose, and likewise two highlighters. Various combinations are tested, but it is only the chosen straw and the chosen highlighter that are attracted to one another. The secret is disclosed toward the end of the video.