George Osborne Cutting Pizza

The transcript involves a brief exchange where one person questions another's action, followed by a confrontational response.

What might be the reason for someone to cut something out?

What emotions could be associated with the dialogue presented?

What context might lead to the question 'Then why'?

How would you interpret the phrase 'Shut up' in a conversation?

In what situations might someone be told to 'Shut up'?