Stock phrase uttered by the villain when everything is going wrong, often soon after he declares that nothing could stop his plan, especially not those puny heroes (and the heroes have shown up to disprove the statement). He screams that it's impossible, despite the evidence staring him in the face. May be a sign of a Villainous Breakdown, or the villain's Last Words before Critical Existence Failure (or, on a more existential level, Puff of Logic). This phrase is often coupled with a Big No. May be accompanied by an Oh Crap. Examples of This Cannot Be! include: