A fictitious race of Vampires from the show Trinity Blood. They are named Methuselah's after the Biblical man of the same name who lived to almost a thousand years.

When one farts in the shower and the surrounding moisture/heat causes the stench to become more intense and linger in a most disgusting manner.

somebody who's really, really old... "older than dirt" old

the undescribable coolness.

older than old, as old as it gets or extremely ugly

In the movie Noah, Emma Watson is given the blessing of Methuselah, causing her to get pregnant and give birth to twins extraordinarily fast. To be Blessed by Methuselah means to be very fertile.

someone or something that is really old.