This one is very dated and therefore comes with an explanation for those about 30 years old and younger. Once upon a time, there was a telephone service that you could call and they would tell you things about your future! Or give you sound advice by looking into a crystal ball, or by gazing into the entrails of a chicken! This service was called “Psychic Friends Hotline”.
Another thing that I should explain is the presence of a telephone in medieval England. Well, that is because this is a cartoon, and if I think there is a telephone in medieval England…then there is a telephone in medieval England!