doesn't have a (certain kind of) bone in (one's) body(redirected from unkind etc.] bone in his body)
doesn't have a (certain kind of) bone in (one's) body
Does not display the trait stated between "a" and "bone." (This phrase does not refer to an actual bone in the human skeleton.) I highly doubt that Jeannie started that vicious rumor about you—she doesn't have a mean bone in her body.