To discover a horrible flaw or truth about someone that forces you to completely re-evaluate your impression of that person.
From 'Roman Polanski' the film director who drugged and raped a thirteen year old girl.
"I thought Dave was a pretty cool guy, then I discovered he EATS kittens!"
"You just got Polanski'd."
"I used to love The Ninth Gate, then I found out what the director did."
"All these things I keep hearing about Woody Allen ."
"Yeah, he just got Polanski'd."