I had a trainee today following me around. We were in an area with many other coworkers, one of which was relating a story about how he rear-ended an elderly Hispanic couple (this is important), that there was no scratch on their car but he had really damaged his driving right up underneath their car and lifted it by the rear end. Someone else said, "At least you didn't have to worry about hitting anyone in the trunk."
No, that is not what I laughed at.
It wasn't until my trainee and I were somewhere else that she mentioned how she really didn't appreciate that racist comment. I said, "Huh? When?" She said, "You know, the comment about the trunk." That's when I started to laugh. She gave me a disgusted look and I scrambled to explain.
"No, no, I'm not laughing at it. I'm laughing because I thought he was talking about dead bodies!" It never occurred to me that he was being racist; I seriously thought he was talking about dead bodies. THAT made me laugh because, well, it's kind of disturbing. Why did I think about dead bodies first?