There's/that's... for you disapproving informal
This phrase is often used under the implication of irony.
Someone or something is a typical example of someone or something bad
You helped her a lot, but she betrayed you. That's gratitude for you!
A: "I can't believe he had an affair with his secretary." B: "There's men for you!"
Try to avoid to change something because doing something else could make things worse
I could have changed my answer, but I decided to leave well enough alone.