seriously, what gives? at least you can fork without that clause, so:

REALLY DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

That's the licence for the license, not the license for the code itself.

The licence for the code itself is "0. You just DO WHAT THE FUCK YOU WANT TO." The license for the license is similar, with the caveat that you're required to change the name if you change the content. Which makes sense; we wouldn't want confusion about what the WTFPL refers to.