its true it does comes out, one of my bros friend had his for about 15 years. He said the needle was inserted under is bicept . As years gone buy he notice that the needle has move to risk. Then one day he woke up finding the needle sticking out of his finger. Then he said about couple of days he woke up and the needle was gone, it came out but it was gone . He looked everywhere around his bed couldn't find it. But he asked ajarn how come the needle move to the point it comes out. The ajarn told him that everytime the needle moves an inch or centimeter. Meaning he did something wrong. The more wrong things you do in life it will moves until it comes out. But he knew during those period of time what he did wrong. The one thing was really wrong was sleeping with someone wife!! he didn't find out until later that she was married. But there was other things he did too and knew it was wrong.