a cup of shut the fuck up
A strong command that means you are not allowed to speak again until you are dead.
My dad told me to be quiet. I told him 'a cup of shut the fuck up!' and he got mad.
My teacher said 'a cup of shut the fuck up' after I kept talking during the lesson.
My friend shouted 'a cup of shut the fuck up!' and I had to be quiet for the rest of the day.