We need to sit down and 'hash' things 'out'. [=talk about things; discuss the situation]
The detectives 'hashed out' their theories about who committed the murder.
They've spent quite a bit of time 'hashing over' the problem.
(..) $. $ for the magnum, $ for the.... $ for the., $ for the.. You take this and wait here. I'll walk down with you. How about dope? Grass, hash, coke... mescaline, downers, Nembutal, toluol, chloral hydrates? - How about uppers, amphetamines? - I'm not interested in that stuff. (..)1976 Taxi Driver