h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

"During dinner at an wedding reception, the groom rises from the head table and shushes the crowd. Everyone naturally assumes he is about to toast his bride and thank his guests. Instead, he solemnly announces that there has been a change of plan. He and his bride will be taking separate honeymoons and, when they return, the marriage will be annulled. The reason for this sudden turn of events, he says, is taped to the bottom of everyone's plate. The stunned guests quickly flip their dinnerware to discover a photo - of the bride inflagrante with the best man."

A Washington Post reporter who tracked the story was told by one source that it happened at a New Hampshire hotel, but then another source swore it happened in Medford, Mass. Then again another suggested a banquet hall outside Schenectady, N.Y. It is highly unlikely that it ever happened, although it does seem that the story originated on the Eastern Seaboard.