someone's luck is in

someone's luck is in

1. Someone is having a period of good fortune.
2. (in particular) Someone is the object of another person's sexual attraction.

• be in luck

• “your luck s in”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “your luck is in” in Idioms and phrases, TheFreeDictionary.com, Huntingdon Valley, Pa.: Farlex, Inc., 2003–2025.
• “one’s luck is in”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.