Sentence examples for that's crazy from inspiring English sources

The phrase "that's crazy" is grammatically correct and commonly used in both spoken and written English.
It is usually used to express disbelief, shock, or surprise at something that has just been said or done. Example: "I can't believe you jumped off the roof into the pool. That's crazy!" In this sentence, the speaker is expressing their shock and disbelief at the action of jumping off the roof.