That's that 

Usually meaning the end of something, or a final part in something; that's the end.

Taken from the movie, Goodfellas during the scene where Tommy DeVito is supposed to be made a member of the Mafia.

*group enters an empty room*

Tommy DeVito: Aww no!

*Mob hitman shoots Tommy in the back of the head*

Mob hitman #1: And that's that.

Mob hitman #2: No fucking joke.

Mob hitman #1: Let's go, I'm fucking hungry.

That's that by HatefulPilot September 4, 2011

That's cap 

When someone is lying/talking bs.

Blue: I couldn't have killed him i was in electrical doing tasks.
Red: Ay "that's cap" i was in electrical with white.

That's cap by Scooberoo October 4, 2020

that’s the shit 

what you say when something is perfect and really just hits the spot

*hits joint*
“Damn that’s the shit”

that’s the shit by ur b1tch November 24, 2019

That's strange 

The response a technical support person gives you when they can't solve your problem.

After calling the 900 number that was printed on the package for help, the customer rep said "That's strange!!" And I knew that I was truly fucked.

That's strange by Stephan Smolka January 31, 2010

That's what she wants 

A phrase similar to "That's what she said." Used to respond to something said that could be taken in a sexual way.

In the lunch line:

Matt: What did you order?

Jay: A meatball sub.

Matt: A 12 incher?

Jay: That's what she wants.

That's what she wants by Slapping Theresa October 26, 2009

that week in march 

The week in march when Daniel Howell forgot to renew his anti-depressants so he was basically a zombie all week.

"Ask me about that week in march in five months."

that week in march by bloodyphannah November 18, 2017

That's fucking country 

An Australian colloquialism for a response to an overjoyed situation.

Davo responded after nailing another feature on the slot machines, "that's fucking country".

That's fucking country by Chalkstar January 10, 2019