But, let’s say a certain someone could expose you to nonexistence. Let's say this person could actually let you experience the state of nonexistence and more importantly, let you remember it. He'd probably be able to get you to agree to anything in order to avoid that fate. Tangentially, for certain people near death, their brain activity sometimes ceases completely for about three seconds and then returns, only to shortly die in a more conventional fashion.
As another side, many hospital orderlies have noticed a man wearing a suit that they have never seen in any catalog or on any person before. Interestingly enough, when you ask them about the suit they will struggle for a moment, then reply that it’s hard to describe, but they are sure they haven’t seen it before. Ask them about the man however, and they will freeze up, spasm violently and reply, "What man?"