You might do something ill-considered and suddenly it could be over, especially if you're a child with a child's exaggerated fears and longings: a teacher will seem impossibly attractive, a friend will move away and life will lie in tatters, a burgeoning relationship will outshine the sun.
If you do something ill-advised, like write random bytes to random I/O ports, you will crash your OS, and can (in theory) fry your hardware.
Knuckleheads seems a very good word for people doing something ill-advised that has almost certainly been done by other people in their positions who were lucky or clever enough not to get caught.
"I think that the anti-iPad naming buzz will die a natural death very soon unless Apple does something ill-judged to keep it alive".
And even as we speak, Sarah Palin is doing something ill-conceived and self-destructive to the Republican party.
So obviously, I expect when I hear of these incidences that the person who was shot did something ill-advised to get themselves killed.
Miss Prasad is surely likely to do something highly ill-advised, if the once-beardy teacher man doesn't do it first.
When World magazine, an evangelical Christian publication, reported last week that Dinesh D'Souza, the outspoken conservative and president of the King's College, a small Christian liberal arts institution in Manhattan, had checked into a South Carolina motel with a woman who was not his wife, the first obvious question was how a smart man could do something so ill-considered.
Twelve years ago, a local GP's wife decided to do something about the ill health her husband and his colleagues saw daily.
But it was also a reminder to affluent Americans of their moral obligation to do something about America's "ill-fed, ill-housed and ill-educated" children.
An overzealous police officer sees it and decides that they are obliged to do something, and the ill-advised action of a moment becomes inescapable.
