Question you didn't ask--When Mrs. Butters first lays eyes on Jack and is suspicious she already has a shake ready for him. How did she know to be prepared?

2nd question you didn't ask--why didn't the boys figure out that yarrow and jawbone would have powered Jack down last season when he got all-powerful? Wouldn't that have been really nice to know back then?

(Also--when I rewatched I saw that Sam was tied to the chair with rope when Mrs. Butters was removing his fingernails.)