what's what

It’s not cut and dry, what’s what and how you’re going to feel.

We all know each other and what’s what and what’s up.

“They’re creating volatile, dangerous situations,” Gordo told me, saying he fears that bullets will fly through neighborhoods, or that police will arrive on scene and not know what’s what or who’s who.

You are one of the few people who ever tells Carrie what's what, and I've waited 25 years for that.

"Sometimes you think he's joking but his questions are completely genuine – you have to tell him what's what and that's how he learns," he told Bore Sul on BBC Radio Cymru.