- Hey I got some good news. You just won a million dollars.
That is good news!
Not really, the bad news is, you owe the IRS ten million dollars.
Oh, that is bad news.
No, it's good news. You just inherited 30 million dollars!
That is good news!
No, it's bad news, it's your favorite uncle that died.
Oh, that is bad news.... so on, and so forth.

EDIT: Keep the chain going: i.e., what you post should have a connection with what came before.
The good news is, you just invented the world's first truly affordable personal flying machine!!!