First World Problems

How do you respond to someone's whinge about an inconsequential problem that nobody else cares about?

"That's a first world problem."

This is perfect is someone can't decide what colour car seat cover to choose. Or if they run out of truffle oil and the gourmet supermarket has closed. Or if they set the timer to record a movie and missed the last 3 minutes. Or the work air conditioning chills them in summer. You can even buy a sympathy card for these situations.