Sometimes, when a character is angry or deranged and is just about to snap, they start moving head down, everything limp, lurching as if they were a marionette that's had its strings cut.Kubrick Stare, andinability to form coherent sentences optional. This is sometimes taken as a sign ofUnstoppable Rage—any character that dares to get close risks serious injury, especially if the character is alsodragging a weapon across the ground.
Probably taken from Western horror flicks, where it's associated with zombified/possessed characters. Compare withPrimal Stance,Marionette Motion andZombie Gait.