The all-day and into-the-night annual affair, held at Hansen Dam (this year's on July 26), begins with a mass morning blessing by a Catholic priest, who then goes car to car, blessing each individually. Some people also ask him put holy water in their radiators.
With the Shag title art and copious numbers of scantily-clad vixens in photos, I suspect it's not an official Catholic Church-sponsored event. I wonder where exactly it falls in the ironic/sincere spectrum. (via MeFi)