Horny Vikings: At one point in history, the farm was attacked ages ago by vikings who swore to tear it down out of revenge towards its original owner.
Not Quite Back to Normal: The episode ends on the note that although the windmill is in tip-top shape again, Courage, Eustace and Muriel's heads are still detachable from their previous interaction with the ghost vandals.
Oh, Crap!: While researching the runes on the windmill, the Computer tells Courage the legend of the vandals are are kept back by said-runes as long as the windmill keeps turning. He assures Courage it's only a myth. ...before he shorts out mid-sentence, signifying that the windmill has stopped turning, and Courage is barely on borrowed time before the vandals' ghosts return.
