Idiom: (get) in on something
— Who is in on the planning for the holiday party?
— Everyone in the neighborhood is in on cleaning up the park this weekend.
— The lotto is up to $500 million. Do you want to get in on our group ticket purchase?
— Are you in on the softball league this year?
— The police found out some of the guards were in on smuggling drugs into the jail.
— Do you want to get in on the group baby shower gift or are you planning to buy something yourself?
— If you don't have enough parent volunteers, ask Jerry. He's always eager to get in on school field trips.
— "Are we in on the basketball game Saturday night?" "Yes, I asked Sheila to get us tickets and she said Brian will drive all of us there in his van."
— Unfortunately, my father got in on some "investments" which a "friend" recommended and he lost half of his retirement savings.
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