Dudes secure enough in their manhood don't come up with silly rules about what they can and can't do. That's trying to compensate for something. The least manly men are the ones trying to dictate what is manly, so they feel better about themselves.
Oh the irony of a conversation about cool dude stuff, started by a guy (I'm guessing he is) who says Em for Eminem. Lol nobody has or ever will do that. If there's a chick thing, it's that. 😉 might as well call him little Emmy