How to get someone to be quiet?

you should slap them across the face for being noisy.first tell em to shut up...if they don't..... then... get up and slap them..then when you say shut up the next time they will listen...trust me it will work..they will get scared of you....

Another:

Go to front and shout "Quiet!!!" and if they don't care , go in front of him/her and shout him/her "Did you hear me? I said Quiet!" Trust me!