He banned a popular trend in his class, but then made a hilarious video showing how good HE was at it!!
Nathan Marshall's 6th grade class was in the habit of flipping water bottles to try to get them to land upright. He had to ban it from happening during class because it was such a distraction, but then compiled a video of himself successfully flipping bottles numerous times, even into small spots, to show them it's just physics!!
I would still be annoyed that he banned it in class only to rub it in their faces haha!