Corrected entry: Why would Homer and Marge wait for the bathroom if they have one in their bedroom?
Corrected entry: Bart asks Lisa how she knows so much about the Talmud. She credits her imaginary Jewish friend. But Bart was with Lisa in episode 3-6: "Like Father, Like Clown," when she made an extensive study of ancient Jewish texts. So Bart shouldn't need to ask the question in the first place, and Lisa's answer is incorrect, or at least incomplete.
Correction: It could have been out of order.