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Imagine having studied for years and years to achieve some qualification in Electronic Engineering (employed in Radar displays et. al ) and visiting home to hear your mother telling her next door neighbour;- "Oh, Brian will put in a plug(sic) in your washhouse for your new washing machine- he's an electrician!" What do you do? You get out the Rawlplug star drill and start bashing - it was 1964 and life is to too short to try and explain.