This was in highschool, we were about 16 at the time, thus young+drunk=stupid^10

It was about 2 or 3αm, my buddy and I found a whole bunch of traffic cones stockpiled on the side of the road, so being inspired by the Catholic school on the same corner, we proceeded to block the nearest 4-way intersection by moving the cones into a massive cross going through the middle of the intersection. 

The next day a friend of ours mentioned she saw it and was super confused about what to do.