  A completely different set of challenges to the meaninglessness view stems from the fact that while category mistakes are rarely used in literal discourse, they are highly prevalent in figurative speech. Consider for example a metaphorical use of ‘The poem is pregnant’ (by a critic, wanting to describe the richness of the poem); a metonymic use of ‘The ham sandwich left without paying’ (uttered by a waiter in reference the customer who ordered the ham sandwich); or uses of category mistakes in fiction (a story containing the sentence ‘The tree forgave the boy’ or even ‘The number two was happy’). Indeed, the very fact that the sentences in question are category mistakes often serves as  in indication that the sentence is used figuratively rather than  literally.[17]