Great tranquility of heart is his who cares for neither praise nor blame.

Smartphones. Who cares? Smartphones. I only have dummy phones.

Who cares if you bunt for a base hit?

It was a big story and yesterday's soup. Who cares?

Who cares about winning? We should focus on serving.

My eyes are too small, and they're too close together, and I have a pointy nose. But who cares? Who cares?!