You can watch the whole video from TMJ4, but the following super reasonable quote from Sheboygan Falls senior Jordan Jackson pretty much sums it up:
"I did it like every other kid does it when they make a 3. When you make a three, everyone does this sign. You've probably seen LeBron James or someone do it. I did the three in the picture, and my little brother pointed at the camera."
SMH, Sheboygan Falls.