Megosztott hang

nah this actually scared me for a second… so we were just sitting in class doing nothing and outta nowhere someone banged HARD on the classroom door like not a normal knock… i’m talking full force everyone went dead silent teacher looks at the door… doesn’t open it then it happens again BANG. even louder at this point people are actually getting nervous my friend whispers ‘bro don’t open that’ and i swear the handle slowly started moving like someone was trying to get in teacher finally opens