I manage to see another ugly side of human beings. Being young is definitely not an excuse. Black sheep cause problems to the rest and in the end, frame others.
If you are sitting in the front and you claim you cannot hear your lecturer projecting his voice loud to the end of the classroom until he almost loses his voice, check your ears. If you do not do work during lesson and yet you try to backstab the lecturer somehow, it simply shows your character. It is very tiring to entertain students who are dragging the pace of the class down.
Some dogs love to test the system and simply take kindness for granted.