Before Matt Damon popped up, MondaysJimmy Kimmel Livewas supposed to be all about Aunt Chippy.

Aunt Chippy is there to play Blackjack for you.

And if she wins, you win.

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Credit: ABC

With Mondays audience members psyched about their odds, Kimmel explained the rules.

But then the camera angle widened, revealing Damon sitting next to Chippy.

Damon went on to explain that he was in Sin City for the world premiere ofJason Bourne.

Thought maybe Id play some cards with Aunt Chippy, said Damon.

I dont know is that a crime?

Aunt Chippy lost all her money, and Kimmel was infuriated.

He took all your money from you, and now we have nothing.

But Damon was feeling generous.

Jimmy, I was thinking, you know.

I think weve gotta do this again.

With Damons extra cash, Chippy was able to give it another go.

Watch it all go down in the video below.