I got pulled into a meeting on my day off to address an accusation that I'd screwed something up at work. What it boiled down to was that I made someone do their job, and they screwed it up. It's not a situation where I was involved in the project in any way, other than telling the guy who was refusing to do his job that he needed to quit watching YouTube and actually work. I was finally exonerated, and even managed to get my manager and boss to point the finger at the other guy's manager, who still kept insisting it was my fault.