Moving dirt !

I was in a showroom and needed some heavy equipment to do a job.  They showed me different earth movers including a small bulldozer.  It was bright yellow but only about six feet wide.  I finally decided on a small excavator.  The salesman wanted me to get instructions but I decided against it.  I got to the job and it was digging a grave.  I wished I had got the instructions because it was very difficult to get the sides perfectly square.  I was finally able to get it done even getting perfect corners.