shout the fuck up ne anlama geliyor?

Bir çeviriye bakın

It is a very harsh and rude way to tell someone to be quiet. Though sometimes it can be used to mean "Really? I can't believe it!" with friends. But I wouldn't suggest trying to use that if you aren't a native speaker, because it's usually a very rude phrase.

It goes like this:

Please be quiet -> polite (can say to strangers)
Be quiet. -> a bit less polite, more of a command.

Shut up -> very rude or angry, not appropriate to say to your parents or people who you should respect

Shut the fuck up -> really aggressive way to tell someone to be quiet