Of course they also have a sense of humor. And they are a bit morbid.

This video is in German. If you don’t understand, skip ahead to about 1:50. I don’t know if it is a real instructional video. Probably just a film school project.
*****UPDATE*****
Actually this is an award-winning short film called Staplerfahrer Klaus – Der erste Arbeitstag and it has its own website.