"Stop Hurting Yourself"

we're supposed to write about the sign that says "stop hurting yourself." on the first day of school i saw that and thought mr.hsu was all weird. i have no idea what it means or it's significance. a situation where someone could hurt themselves....im not sure. But if anyone does harm themselves it would always affect them and their family or friends no matter what. the sign could mean a lot of things, i'm just not sure what it is. Maybe it's up there because if anyone ever thinks about hurting themselves....it would help us not to? Not too sure...