This is totally going to be a 'definition' post, so I just wanted to say first that this is my opinion, and I probably won't change it unless something goes 'BING!' in my head.
I posted a status on fetlife, saying something along the lines of me being rude and sarcastic when I'm tired, so I should keep my mouth shut. A dude commented on it, saying 'Well, as a slave, you should be asking permission to speak'.
That ruffled my feathers, but it made me think. I don't really 'need' to ask permission from Master to do anything. Usually, if something isn't the way he wants it, he will tell me to do it another way.
Also, I pretty much do whatever the hell I want.
This guy asked "Then why do you consider yourself a slave?'
Because Master can take what he wants, when he wants, and how he wants. He just doesn't do it. He's a laid back guy, and sure, it gets me all frustrated, but that's the point.
That's why I like this dynamic.