When Mrs Naugatuck comes downstairs she is wearing high heeled red shoes, then she is asked to go back upstairs still wearing the shoes. When asked to come fireball again, without ever leaving the room, he comes back down but she is wearing black clunky shoes. When Maude demands she go back upstairs she is wearing the red high heels again.
Mrs. Naugatuck comes down the stairs first in red shoes and goes back up in red stairs, when called back down she has black shoes on.
At the beginning of the episode, the refrigerator is shown as not having a tape recorder built into it. Later that scene, it seems the tape recorder appeared in the front of the refrigerator suddenly as Walter goes to listen to a message on it.