you're in luck

be in luck

To experience good fortune, typically when one's wishes are fulfilled unexpectedly. A: "Aw, man, I can't believe I forgot to bring my headphones with me to the gym." B: "Well, you're in luck—I have an extra pair you can borrow."See also: luck

you’re in ˈluck

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your ˈluck is in

you are lucky at the moment: I knew my luck was in today when all the traffic lights were green on my way to work. And now I’ve found that money I lost.See also: luck