After school I go to the Community Y. While checking in, the worker always says, "Why do always bring all of these kids with you?" Although the comment is made tongue in cheek, the fallacy is because I arrive and kids follow, I bring the kids with me. The worker is saying that I bring a lot of work and discipline problems too.
Every night I come home and have to park in the public parking place behind Ace Hardware. The front door of Hubbles, bar, faces me as I park. For the last month, I have thought as I parked, "Look at that. Muscatine Electric truck is parked right in front of the bar. I'd never hire anyone from there to work on my house because they are always at the bar." I was smug. It didn't occur to me that Muscatine Electric could see my car parked in front of Hubbles and draw the same conclusion. I had committed a stupid post hoc fallacy. Just because their van is parked by the bar doesn't follow that the workers are patronizing the bar.
One day, I saw the workers exiting their second floor apartment on the way to work. Now I know why the van is parked by the bar. I was wondering how many others have made the same erroneous conclusion.