Credit card slots on the back of the neck Has anyone ever tried to do a swipe in the credit card slot? I know that would necessitate getting close to one, but it would be funny. I'm too much of a coward myself. I do wonder how it feels to have lumpy fat rolls on the back of your head and neck, though. Like this: http://i.dailymail.co.uk/i/pix/2013/11/02/article-2484031-192477E400000578-467_634x416.jpg