I like Dave Barry's explanation of electricity (e.g. http://www.comp.leeds.ac.uk/Perl/Misc/electricity.txt http://www.comp.leeds.ac.uk/Perl/Misc/electricity.txt

I like Dave Barry's explanation of electricity (e.g. http://www.comp.leeds.ac.uk/Perl/Misc/electricity.txt http://www.comp.leeds.ac.uk/Perl/Misc/electricity.txt ) including "the electric company sends electricity through a wire to a customer, then immediately gets the electricity back through another wire, then (this is the brilliant part) sends it right back to the customer again. This means that an electric company can sell a customer the same batch of electricity thousands of times a day and never get caught, since very few customers take the time to examine their electricity closely. In fact, the last year any new electricity was generated was 1937." and "AMAZING ELECTRONIC FACT: If you scuffed your feet long enough without touching anything, you would build up so many electrons that your finger would explode! But this is nothing to worry about unless you have carpeting."