Use it when you hear something shocking or impressive and want to emphasize your reaction.

Expressing Surprise

It's a way to express that something is hard to believe because it's so extraordinary.

Amplified Disbelief

Use it to add drama or flair to your conversation, especially when sharing anecdotes.

Use it to challenge friends in a light-hearted way after you've done something noteworthy.

It can stir competition, prompting others to try and outperform the original feat.

Suggests that what you have done is so great it could be seen as a record to beat.