Pure curiosity...

What are the etiquette rules surrounding a woman proposing to a man? Must she wait around for him to propose? If they've discussed marriage (and know that it is something they both want - together), is it acceptable for her to go ahead and pop the question? And would this in any manner hurt the man's ego, or 'threaten his masculinity' if the traditional roles were to be reversed?

And what would/should a woman present to the man in this situation? (in lieu of a traditional engagement ring).

Now playing: "Seven Nation Army" - The White Stripes

Editor's Note: Just to clarify, no, I was NOT referring to myself. Didn't mean to cause a panic.