I don't think people should pay much attention to Schumer, after seeing him talking to an empty chair and waiting until that which he was talking to moved so he could sit down in that empty chair he was talking too. I don't think his brain is in a good place right now if he knows he sees things others can't he should just pretend he does. Just stand there and pretend you are dusting something off your clothes, that would work, and went that invisible person or animal, could be an invisible rabbit, then sit down normally.