Best friends/wishes

Haven't we all at some point in our lives, wished for a best friend? I know I have. I know you have too! How do I know that you know…? Well, when you fall asleep, some nights I'll come in to your bedroom and hook up a few electrical probes to you. When a current is detected a machine displays a graph showing the size and shape of the slope of the current. And if your brain was the one making the curent… hehe then GAME OVER i just reversed engineered what your were thinking… and it was easy!