Pixellated Brain Disease (PBrD) is a rather unfortunate condition affecting many members of the general public. Similarly to its bigger, more blocky brother, Pixellated Face Disease (PFD), it results in the individual's brain being reduced to nothing but a series of coloured (or, in John Major's case, many tones of grey) squares resembling deceased pixels. It can render the individual incapable of thought, unable to bite fingernails or to eat with a spoon without poking their eyes out.