[Aaaand he's flopped back on the ground. Dying and turning into a duck is the very thing that has broken Walter's ability to make up a scientific explanation for every anomaly that he's faced. Quantum physics can cover a lot, but this is just getting ridiculous.]

No. No, I died a long time ago. You're all just my deteriorating brain's dying hallucinations. A quick peaceful death would just be too much to ask.