Rumarie was an ancient pagan holiday on the planet Vulcan that has not been observed for a mellennium.
In 2372, while learning about about Vulcan holidays, Neelix discovered the holiday of Rumarie, which was a festival, as he described, "full of barely clothed Vulcan men and women, covered in slippery Rillian grease, chasing one another." (VOY: "Meld")