How to use a dandelion to detect copper. First, you get a dandelion that has puffed up with the little fuzzy ball on top. Then you tell someone you can use the dendelion to find a penny. Make sure they have no pennies in their pockets and then you give them a penny and tell them to hide it somewhere on their body while you have your back turned. Turn around and start at their feet moving the dandelion slowly over their body like it was a metal detector. When you get to their face, hold the dandelion about two inches in front of their lips and say "It's in your mouth". They will say "no it's not", and you say "let me see". When they open their mouth, shove the dandelion in and run like hell.