Lisa's Date with Density a child from Josh Weinstein's school days who everyday would get onto the bus with a piece of toast, which had Vaseline on it. A majority of the story is a reference to the film "Rebel Without a Cause". Lisa remarks that Nelson is "like a riddle wrapped in an enigma wrapped in a vest", a reference to "a riddle wrapped in a mystery inside an enigma"; this was Winston Churchill's opinion of Russia at the outbreak of the World War II. In its original broadcast, "Lisa's Date with Density" finished 63rd in ratings for the week of December 9–15,
Painted enigma Painted enigma Originally used by Jesuits as a learning aid for students, painted enigmas are visual riddles - generally speaking, a picture with an easily understood superficial subject that contains a hidden meaning, usually one word. This differed from similar visual riddles such as the emblem or hieroglyph (Horapollo's ""Hieroglyphica"" for instance)which were simpler in design and intended to represent moral precepts. The emblem and painted enigma were similar in that each usually contained some clue that the composition contained a hidden meaning, usually a "written legend which might be a verbal riddle or rebus to be solved by the