How old is your dad now when you were born at his age 33 years old?

Answer 1

Oh, what a lovely thought experiment! If you were born when your dad was 33 years old, and let's say you're 25 now, that would make your dad 58 years old. It's so nice to ponder these things and appreciate the passage of time.

Answer 2

You age now is the age your dad had 33 years ago when you were born. As you were zero 33 years ago, you are now 33. Thus your dad was 33 when you were born and he is now 33 +33 = 66.