My father is 66 years old and I am 27 years old. Is he old? There is a brother 12 years older than me?

You pay 66, you pay 27, which is not old. You are all older than you 12 years old, not old. Even if you are 276, you are not old. If you are old, generally speaking, if you are 60 years old, you will be two or three years old now, which is considered old.