 Although Aristotle did not use the term incongruity, he hints that it is the basis for at least some humor. In the Rhetoric (3, 2), a handbook for speakers, he says that one way for a speaker to get a laugh is to create an expectation in the audience and then violate it. As an example, he cites this line from a comedy, “And as he walked, beneath his feet were—chilblains [sores on the feet].” Jokes that depend on a change of spelling or word play, he notes, can have the same effect. Cicero, in On the Orator (ch. 63), says that “The most common kind of joke is that in which we expect one thing and another is said; here our own disappointed expectation makes us laugh.” 