Sekirov Dictionary

that's something

/ˌðæts ˈsʌm(p)θɪŋ/

exclamation 2
phrases 4

exclamation2

(informal) Used to indicate approval, surprise, etc.
(informal) Used to indicate that one aspect of an otherwise bad situation is good.

Phrases with that's something

that's done it
Used to express annoyance or announce that one has reached the limit of one's patience or temper.
that's your lot
That is the end; there is no more; that's it; that's all
that's saying something
Said of something that has an even greater impact or effect than what is readily apparent, considering the context.
that's the thing
Used to seize on a point and highlight its comparative importance, especially as a refutation or negation to a statement made by another speaker.

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