That's why I find the WTFPL a bit misleading, I tend to prefer the official french version of it (LPRAB -> http://sam.zoy.org/lprab/) ; the main point of this one is the "j’en ai RIEN À BRANLER." part, i.e, "I don't care at all".

It leaves little room to potential ambiguities regarding whether or not you should expect the author to care about concerns like, looking like a kid.