I've noticed people with gashes on top of their hands. It can be a line, smiley face, etc.
I then got suspicious and continued to investigate, then sooner found out that people were burning themselves with erasers.
"An eraser burn is when a person rubs an eraser on top of the skin and rubs it really fast, removing the top layer and letting the raw skin show. It then gets scabbed overtime as a huge mark."
I looked at other people's hands and noticed about 1- 5 eraser burns, and realized it might cause an addiction to it.
Any thoughts on this?