I was once working on a Jeep Sumo server right before v21 last summer, and as I went away for around twenty minutes, someone spammed around six-hundred chests on the ground. Whoever did it painted it to look very similar to a road, and soon, people started calling it the "Chest Road." I promptly cleared all the bricks of the three people who contributed to the spam, although it was mostly made by one person.
Honestly, chest-spam is very annoying.