Good Morning Ulster - A Cambridge academic says you only really become an adult in your thirties. - ÃÛÑ¿´«Ã½ Sounds

Good Morning Ulster - A Cambridge academic says you only really become an adult in your thirties. - ÃÛÑ¿´«Ã½ Sounds
A Cambridge academic says you only really become an adult in your thirties.
Do you only become an adult when you're in your thirties or when you get your first bill?