Counting age in months

There needs to be an unwritten rule set on how long it’s appropriate to tell your child’s age in months. I heard a woman say the other day that her child is 31 months old. Lady, your child is 2 1/2…. 😂

I understand telling your child’s age in months up until 2 years old. Children’s clothing counts in months from 0-24mo so I get counting to 24. But once your child hits 24 months, I think it’s time to start counting in years and half years. Their clothing no longer counts in months for sizing so maybe we shouldn’t either. Just a thought