(colloquial, idiomatic) Indicates the expression of a personal opinion, but often used ironically as an understatement.

(idiomatic, US) Indicating an abrupt termination of a project, or of one’s hopes or plans.

(US, humorous, idiomatic) A joking retort, intended to draw attention to a previous statement which has the potential for a risqué double entendre.

that's all (there is nothing more to the issue) / yes!, exactly!, bingo!

(idiomatic) That's just right; that's just what is needed.

(idiomatic) There is nothing more to say or to do concerning the matter and is not up for discussion or debate.

Expresses acceptance of misfortune.

Alternative form of that's the way the cookie crumbles.

(slang) Used other than figuratively or idiomatically: see that's, what's up. / (slang) Used to express acquiescence or concurrence; true; indeed.

Used to express enthusiastic support for the referent of that.