The flow of electricity from one body to another has been known by man since we first learned how to gather an electric charge. In contrast to conventional wisdom, the process in the general case is not easy to explain. It is different in plasma in the Sun or in your colour TV display, in semiconductors inside your computer or TV set circuits, or in metals such as aluminium or copper connecting your TV to the mains and to the world outside. The electricity flow will also be different in electrolytes, for example, those filling your body (and brain), should you carelessly try to follow the same connections. Sometimes it depends on the amount of charge to be displaced, the shapes of bodies or even on the condition of the body surface. To understand all this, considerable knowledge of the structure and properties of matter is necessary. (Contains 6 figures and 3 footnotes.)