The "F" word is one of the quickest ways to collapse your energy field. I don't care how it's used. One source says it stands for "Fornication Under the Command of the King" . No wonder I've always hated it and don't use it. BTY, a collapsed energy field (around you) gives you a lot less protection from negative energy. Unfortunately, there seems to be a large number of people who "feel" that's okay. And this is just one example of how words can affect you.