Lebanese army reinforced around camp as more refugees flee, injured

What does the phrase 'Shut up' imply in a conversation?

In what contexts might someone use the phrase 'Shut up'?

How might the tone of voice affect the meaning of 'Shut up'?

What are some alternative phrases to 'Shut up' that convey a similar message?

Discuss the potential impact of using the phrase 'Shut up' on relationships.