Trolls do things for the LOLs. They are motivated by humor. Someone who wants rules for others but breaks those rules personally is better referred to as a hypocrite.

And while he did have a sense of humor (I hear that daylight savings time was just a joke), I don't think that is why he had slaves. He kept them because they were useful to him, and the moment he died they were no longer useful. The slaves owned by others were never useful to him, so they should be freed immediately.