Thousands trapped by flood waters after storm

The video provides a brief introduction to a specific topic, focusing on a particular aspect.

What do you think is meant by the phrase 'On that one'?

In what situations might someone use the phrase 'On that one'?

How can the phrase 'On that one' be interpreted differently in various contexts?

Can you provide an example of a conversation where 'On that one' might be used?

What emotions or attitudes might be conveyed by using the phrase 'On that one'?