In case of emergency
My mom just bought me this new alert device that clipped onto my backpack and told me just to pull a metal piece if someone ever tried to harm me. The next day at school, one of my friends pulled the metal piece and it let out a really loud noise. As I was trying to turn it off, I accidentally rammed my elbow into my crush’s head. Everyone thought that there was a fire drill and ran out of the school. The principal had to come and take it away from me.