older than Methuselah

Older than Methuselah is the idiom referring to how old someone or something is, as Methuselah is extremely old. By referring to the age of Methuselah, this is simply another way to say how old someone or something is by exaggerating the fact. This phrase isnt used as often as some other idioms which mean basically the same thing, but is a preferred way to state how old someone or something is, rather than some other more common ones.