Sometimes we get a language question that leads to another question. That question leads to another question, and before we know it, we’ve fallen down a language rabbit hole.
A listener recently asked us if the phrase “apple of my eye” can be plural. The answer is yes. You could call your children “the apples of my eye.” You and your partner could also call your children “the apples of our eyes.”
This got us thinking about other phrases where there’s a question about which part to make plural. Specifically, we started thinking about phrases like “father-in-law” and “brother-in-law.”