What the Chinese equivalent of "sucked in"?
In the sense of being satisfied/happy/delighted at someone's misfortune. Informal.

Example:
A: Did you know that John was caught cheating on the test?!

B: Really!? Haha sucked-in!

The closest in Chinese I've heard of is
幸災樂禍 but it seems a bit formal. Any thoughts?

Question

What the Chinese equivalent of "sucked in"?
In the sense of being satisfied/happy/delighted at someone's misfortune. Informal.

Example:
A:  Did you know that John was caught cheating on the test?!

B: Really!? Haha sucked-in!

The closest in Chinese I've heard of is 
幸災樂禍 but it seems a bit formal. Any thoughts?

Answer

You can use the word “活該”。

Answer

Mr. Hong's answer is perfect. I would say that too.

Answer

After asking an Australian friend, I clarified 'sucked in', which still means 'cheated, you believed me', like:

A: Santa Claus is outside on the lawn!
B: (Looks outside, but there is no Santa Claus out there) Where?
A: Haha, (you were) sucked in (by me)

There is no sense of gloating， just a dumb joke

sucked in: 骗： A：哈哈， 笑话，我骗你哦！

Answer

Is 'sucked in' Oz speak? I am not familiar with this use of sucked in. ‘sucked in' as cheated, 骗 I know and everyone knows the American 'that sucks'. How does 'sucked in' come to have the meaning you attribute to it?

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