The original formulation of XP promoted metaphor to the status of essential practice. XP was the only agile method that made the use of metaphor this explicit and essential - unique. Unique: and immediately controversial. Few practitioners claimed to understand the intent of metaphor as a practice, how to devise and evaluate metaphors, or the relationship of metaphor to design and the other XP practices. As XP evolved metaphor was demoted and is no longer a separate practice. Most agile proponents mention metaphor and acknowledge minor uses. This paper argues that XP was wrong to abandon metaphor and advocates a more systematic discussion of how metaphor informs development.