Metaphoric statements such as "He certainly is Romeo to her Juliet" can be uttered not only as a metaphor but used sarcastically to make a commentary on the metaphor. So how does one determine the intent of the speaker who utters such a statement? Evidence is reviewed about the constraints that are available for use by someone who reads or hears such a statement and an experiment is described which indicates that at least some of these constraints work on-line, that is during the moment-to-moment processing of the statement as it is encountered.There is an inherent ambiguity in interpreting what is intended by certain forms of language. Consider statements such as "He certainly is Romeo to her Juliet" (1) or "He certainly is Abelard to her Heloise" (2). When, in fact, would someone make such a statement and what could someone who hears (or reads) it, take it to mean? The ambiguity here can arise from at least two sources: the familiarity of the items (in this instance, people) being compared and the message intended by the comparison.Consider for instance the role that familiarity might play. Most students of Western culture would be familiar with the Shakespearean story of Romeo and Juliet and so, on one level, the metaphoric comparison of (1) would be understandable: He (the person being described) is being compared to Romeo, son of the Montague, the lover of Juliet, daughter of Capulet, the arch enemy of the Montague clan. Indeed, one could argue that "Romeo and Juliet" might serve as a prototype for certain types of romantic relationships and that the interpretation of the statement would arise by classifying the topic (He) to the category suggested by the nominal vehicle represented by "Romeo and Juliet" (see, for instance,