talk turkey
talk turkey {v. phr.}, {informal}
To talk about something in a really businesslike way; talk with the aim of getting things done.
Charles said, "Now, let's talk turkey about the bus trip. The fact is, it will cost each student $1.50."
The father always spoke gently to his son, but when the son broke the windshield of the car, the father talked turkey to him.
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Source: A Dictionary of American Idioms