My girlfriend said to me regarding a family of cats: "they look like future us" referring to us starting a family together.
To me "they look like future us" sounds odd and non-idiomatic basically because they're cats and humans can't look like cats, though I do understand the rhetoric meaning.
If you think this is non-idiomatic English, how would you convey the same meaning but in an idiomatic way? And also, what makes "they look like future us" non-idiomatic?
Thank you!