There is a truth in this that is applicable to the real world. It is through my personal experience that these deals are most often made in a state of mind that is not sober. An intoxicated state of mind is more prone to "outside" influence because it is not itself (by itself, I mean its true self, free from the effects of drugs or stimulants). Often these deals will be made through people or concepts that you trust or see no reason not to. Be weary, if you are prone to communication with the other side, when you take stimulants of any kind, it is in these moments that the Devil will be hardest at work. Decisions you make shape your life and future, this includes decisions you make when intoxicated, regardless of how conscious you are of these decisions.