This is a holiday that was created by comedian Richard Herring basically bashing valentines day, with the Patron Saint Skeletor being the mascot.
The original facebook group was started last year, but I noticed about a week or so ago that the original site,
St Skeletor's Day 2009 was down, so I registered the domains
Saint Skeletors' Day! and
Saint Skeletors' Day! and put up a basic site to keep it going. I also messaged the site admin and he promptly put his site up, much better than mine, but I guess one of the members of the group created it for him. Either way, I highly suggest you gentlemen join in on this holiday tomorrow. I've already invited some of you to the group on facebook.