How this typically plays out, AFAIK, is that the interviewee's brother would be the second oldest person in the area. In a town behind the hill, there lives the oldest person in the region - a woman that's over 100 years old. Her secret? The place doesn't do birth certificates, and she took over the identity of her mother once the latter passed away.
A reporter interviews an old highlander at his home:
- What's your secret? How did you manage to live for so long? - For all my life I've followed three simple rules: no alcohol, no tobacco and no women!
Suddenly they hear some noise behind the wall in the other room.
- What's that? - asks the reporter. - Oh, that's my elder brother. He's drunk again and is beating his wives for hiding his cigarettes.