No, I think it just means they have a very good sense of humor. I've seen warnings and things similar to that, though I can't remember where. I must say, though, things like that are subtle and cunning ways of gaining customer-loyalty. You come to recognize these Swedish engineer people as real people, and not some mysterious automatic design facility in the middle of nowhere that churns out data and metal.
Or, they may have been defending themselves against the inevitable instance where a logger cheats on his wife, inciting an act of revenge.
