I have noticed a certain physical trait among some male lecturers. When walking past, or through a group of students, say in a corridor or waiting outside a lecture theatre, they start to walk like Andy Pandy, stiff and puppet like. Any documents they might be carrying levitate to form something like a sergeant major baton. Why is this? My theory is they are jumped up self important weaklings who deprived of any of the disciplinary means they hanker for expulsion, awarding grades of zero or barring students from lectures feel the need to at least try to be firmer, taller and straighter than their cohort, who, I have to admit are often quite bendy.