mm It's common the term is 'brain deficiency disorder'.
Examples:-
questions for showers and toilets in Electric tooth brush sub heading.
Car shop my mate had Customer came in 'Have you ready made number plates for my car I don't want to wait I've tried three and they make them up and I'm too busy to wait'. Divy!! How on earth did this one get a driving license if he had one.
bb, August 2011