What Does It Mean to Lies at Your Feet?

In the middle of the night, some one's something startled the man, and he turned and discovered a woman lying at his feet. There has been some debate about what it may mean to lie at his feet - does it have a sexual overtone? I'm not going to go that way. In the way that i read the story,  I'm going to assume that she uncovers his circumcision and then lies at his feet which does read well. He actually is looking through the sign of the covenant to see ruth lying at hisfeet. It would be an eastern way for him to communicate with her. She is not even saying, let me be a servant who eats at