From Longman Dictionary of Contemporary Englishjust my luckjust my luckspokenUNLUCKY used to say that you are not surprised something bad has happened to you, because you are usually unluckyI didn’t get to the phone in time. Just my luck! →luck
Examples from the Corpus
just my luck• Just my luck! The one vacation I take all year, and I have to get sick.• Married, is he? Just my luck.• Great, I thought to myself, just my luck.• No chance, I thought, just my luck the clocks aren't working.• It was just my luck to have bags made of light nylon, weighing in at ten kilos in total.