You are my boss and you came determined to fire me because I don't do my job well, if I do it at all, and I come to work dressed inappropriately. You found me filing my nails and not doing my job.
You come into my office and start explaining to me that I'm not a good worker. But I cross my legs and you seem to change your mind. After a few minutes you start thinking about giving me a promotion. My leg crossing is so convincing, I can get anything I want!