Dr. Goodword wrote:...
The metaphor I suggested above is missing a word "like", i.e. You are like a pig (in one way).
If everyone uses a metaphor, it becomes a cliche, as is "You are a pig".
We used to subsume similes
under metaphors as that subgroup that made their comparisons with the use of «like» or «as». I sincerely hope, in any event, that metaphors of the type «you are a pig» have not
become cliches ! Forty years on, I remember a young lady who worked as a secretary in a school in which I taught in Japan, who, while accompanying me to the train station, giggled and said «Day-san wa, kao ga pigu no iro desu, ne
!» (You know, your facial colour is that of a pig !) An example of Asia's revenge on the «White» - or more accurately, Pinko-grey - man ! Alas, I was ungallant enough to reply that she, eight months pregnant as she was, «pigu no katachi desu, ne
!» (And you its shape !) But despite this mishap,we became good friends....