S7E10: Near-Death Wish
Eighty-one, thallium. Eighty-two, lead. Eighty-three, bismuth.
SHABBA-DOO: The poor little psycho never could've survived on his own.
So we kept him on the farm as long as we could.
GRAM-GRAM: (SNIFFLES) But one night, he ran away,
taking nothing but the clothes on his back.