Pon farr: The Every-Seven Lethal Passion

It gets serious every seven years. In Star Trek mythology, Vulcan males go into heat every seven years in a ritual called Pon farr. So bad, in fact, that they die if they can't find a suitable mate.

Marketplace reports that Genki Wear is marketing a perfume for women named Pon farr.

And lest it be thought a coincidence, the Star Trek series Next Generation, Deep Space Nine and Voyager each lasted seven seasons.