Whenever you go through the metal detectors at the airport, you're asked to remove your jacket and put it in one of the plastic trays. On a recent trip this got me thinking - what if you're wearing nothing but the jacket on the upper part of your body? Would you still have to remove it or could it stay on as you pass the X-ray machine?
For the sake of the question imagine someone wearing a huge winter parka with lots of pockets.