This means that the demons inside of you are observing you at all times. As you can sometimes observe their form and behaviour also. But when you are observing their behaviour, you recognize that they are also hiding their true form and intentions while they are abserving you; observing them. And you are both curious as to each others presence and features and figures; as they are always trying to hide their true hideousness and intentions of having you being tormented in hell by them.