Use it to emphasize strong rejection or disagreement with what someone said or thought.

Emphatic Denial

Good for responding to assumptions or accusations that are completely wrong about you.

Response to Assumptions

Show that you aren't surprised at all by an outcome that might surprise others.

Shows complete indifference to something that might affect or interest others.

Useful when you want to assure others that you are fine and not affected by something.

Helpful when you want to calm someone down by showing your lack of worry or distress.