Bus-tration....

You know that old saying about waiting all day for a bus and then three come together, well it's not just a saying, it is so true.  But what I would like to know is, why do the three come at the time that the last one is due, not when the first one is due.  That makes me late.....grrr!!  Do they not know that the 'Dragon' is  watching......timing.......waiting.....ready to pounce......