There was an incident when Mrs Forrester's tom-cat drank butter-milk with a super expensive lace. The aftermath might have gone too far when they tried to retrieve it, but the moment when they realized what had happened was priceless: "He's choking!"
The cow wearing flannel pyjamas. It Makes Sense in Context, and it's hilarious. And for that matter, "Bessie dearest!"
Dr. Harrison mistakes Augusta Tomkinson for Caroline's mother. Offended, Augusta corrects him — she's her sister!
Martha is shocked to see Miss Matty wearing a thin shawl, "at your age".
Miss Matty: At my age? At my age? How old do you think I am, that you speak about my age?