where dose my fist stop and your nose begin

[Saira]

where does my fist stop and your nose begin?

[Quizmonster]

This is an old definition of the point at which freedom ends. You are perfectly free to wave your fist around wherever you care to; however, that freedom stops at the point where it comes into contact with the tip of my - or anyone else's - nose. As it's relatively improbable that I would have decided to assault your fist with my nose, it follows that it is much more likely that YOU have just assaulted ME. And you're not free to do that, I'm afraid. So, the answer to your question really is: "At the same place as your freedom of fist-movement ends."