Good luck

We say "good luck" to friends to offer our support. It means, "I know there are factors outside your control, but I hope you succeed." But, in everyday conversation, the words "good luck" are often said sarcastically, with a not-so-supportive meaning: "You're wasting your effort. I already know you're going to fail."

When was the last time you said "good luck" to someone? On that occasion, which meaning of the phrase did you intend?

This week's theme is good luck.