To threaten someone with grevious bodily harm after being exposed as a liar, cheat or fool; typically when faced with insurmountable and undeniable evidence.
have the cookies!"
<John sees Jane with her hand in his cookie jar>
John: "Hey! Those are my cookies! You're stealing!"
Jane: "I'll brake ur arm, nose or jaw!"
John: "Please, don't rahurm me! You can have the cookies!"