Idiom of the day :- Old as Methuselah

Usage, examples and definition of the Idiom :-

One day Methuselah ( meh-THU-zeh-la ) was sitting on a rock waiting for a bus when someone came along and wished him Happy Birthday. Poor Methuselah, he forgot it was his birthday, but when you are as old as Methuselah ( the Bible says he was 969 years old ) you tend to forget things like that. From that, anything or anyone said to be as old as Methuselah is extremely old.