Clashes between anti-government protesters and police in Maracaibo

What do you think the phrase 'Not that.' implies in a conversation?

In what contexts might someone use the phrase 'Not that.'?

How can the phrase 'Not that.' change the meaning of a preceding statement?

What emotions or reactions might the phrase 'Not that.' evoke in a listener?

Can you provide an example of a situation where 'Not that.' would be an appropriate response?