I had one from a few years ago at the Victoria Regional: You're playing 4♠ via an unusually normal auction. The lead is tabled, and everyone in British Columbia knows it's a stiff. It goes club, club, J....and you staring at the Axxx in dummy and Kxx in closed hand, DUCK. Another suit is lead and continued, and then a club gets pounded. Hand's ice cold, but -100 you record. As you fret over your vulnerable game loss, when scores are compared, you learn that somehow, the opps also went down in the ice cold game. Imagine how you feel when, you learn the opps did THE EXACT SAME THING you did. Brilliant!