1.
the beginning of the end of human existence; a way to trick evolution into destroying through genetics what warmongers could not destroy through the splitting of the atom; the trump card of phallocentricity; alt spellings, viarga, vi@gr@, v-i-a-g-r-a, and so on.
2.
a potion meant to save humanity from an apparently imminent extinction brought about by the flagging frequency of sexual intercourse between senior citizens.