For some, it’s Judgment Day. For others, it’s party time.A loosely organized Christian movement has spread the word around the globe that Jesus Christ will return to earth on Saturday to gather the faithful into heaven. While the Christian mainstream isn’t buying it, many other skeptics are milking it.A Facebook page titled “Post rapture looting” offers this invitation: “When everyone is gone and god’s not looking, we need to pick up some sweet stereo equipment and maybe some new furniture for the mansion we’re going to squat in.” By Wednesday afternoon, more than 175,000 people indicated they would be “attending” the “public event.”The prediction is also being mocked in the comic strip “Doonesbury” and has inspired “Rapture parties” to celebrate what hosts expect will be the failure of the world to come to an end. In the Army town of Fayetteville, N.C., the local chapter of the American Humanist Association has turned the event into a two-day extravaganza, with a Saturday night party followed by a day-after concert.“It’s not meant to be insulting, but come on,” said organizer Geri Weaver. “Christians are openly scoffing at this.”The prediction originates with Harold Camping, an 89-year-old retired civil engineer from Oakland, Calif., who founded Family Radio Worldwide, an independent ministry that has broadcast his prediction around the world.