S3E5: And the Wiener is...
It sure does, Mister--
Get the hell off of me!
Well, Rudolph, We finally figured out what makes your nose red.
Is it pixie dust or-- or leprechaun tails?
No, it's a tumor.
You mean like a magical Christmas tumor?
No. A malignant tumor, the base of which is lodged deep within your brain.