You have to add "onerself" to the verb: "hacerse el tonto" = to make a fool of oneself "hacerse daño" = to hurt oneself This oneself then changes according to the person, for instance I would say "I made a fool of myself" (when talking about me) but "you made a fool of yourself", "he made a fool of himself", "she made a fool of herself".

yes, indeed, that's the answer :-p