I fall a lot in hockey. Just stating a fact, not really meaning much about it, except that yesterday I fell on my tailbone and it fucking hurts. I don't normally think about my tailbone, and it doesn't usually pay me much notice. But now, since it hurts to sit and that is pretty much all I do at work, my tailbone is not happy, so it talks to me.
"Please kind woman, do not sit on me. Oh, you are going to have to sit on me anyway? Then I will ache. And you will have to rub me and it will look like you are patting your own ass. I hope you are happy."
In conclusion, if you see people rubbing different parts of themselves, maybe it is just that different parts are talking to them for the first time in years, and they are saying I hear you small friend. I'll try.