Even the most artful con-man can't pull one over on God. So don't even try it.
Hebrews 4:13 reminds you that accountability counts. Your behavior shapes your character and your character is what you do when no one is looking. God is always looking. Work on improving your private self and all who see you will be touched by your goodness.
Nothing in all creation is hidden from God. Everything is naked and exposed before his eyes, and he is the one to whom we are accountable.