Seriously.  He shines in this response to Paul Craig Roberts on economic freedom indices.  Highlight:

Then there is this entirely inept, misleading, and even insulting equation of the “American taxpayer’s situation today with that a 19th century American slave.”  Did you ever hear that joke: “Do you know the difference between a bathroom and a living room?  No?  Well, then don’t come to my house.”  In a similar vein I say that if you cannot tell the difference between outright slavery, as occured to blacks in the US in the 19th century, and being subject to an income tax, then do not come into the parlor where matters of political economy are being discussed…

Perhaps the source of Walter Block’s addictiveness is his knack for ridicule…