I pretended not to know who he is

I had just opened the safe, but the governor could not see it from the door. So I had to stop him from getting further in to his bedroom. So I acted as if I did not know who he is and as if I thought he was stupid.
"Let's see ... I wear a cleaning person's uniform, here is a big cart with cleaning supplies and I have a vacuum cleaner in my hand, I guess I have to be the cleaning lady. Who cleans here. And who does not have much time for it - so... whoever you are ... get out of the room and let me do my job! "