I am not a lawyer but like the new no evil license clause Doug Crawford put on various packages this I'm not sure that "do what the fuck you want" is particularly meaningful in a legal context. You know people have been saying "don't roll your own crypto" lately?

Don't write your own license.

Don't write your own contracts.

Don't write your own legal documents.

There are plenty of solid, well written and unambiguous licenses out there that one can use to offer your users the same freedoms without the WTF.