If you want to party with Justin Bieber, here's hoping you either have a lot of discretion or a ton of coin -- because if you're caught blabbing about it, it's gonna cost you.

TMZ nabbed a copy of Bieber's extensive confidentiality agreement -- the agreement anyone who enters his house is forced to sign.

The forms are officially called a "liability waiver and release," and they prevent anyone from talking not only about things they saw happening in the Calabasas, Calif. residence, but also about the "physical health, or the philosophical, spiritual or other views or characteristics" of Bieber or anyone else therein.

If you dare say one word about the goings on and it gets back to Justin's camp, you'll be charged $5 million -- and that's per individual offense. So if you were to, say, Instagram a photo at a party at Biebs' mansion, then link to that photo on Facebook or Twitter, it would cost you $5 million for the Instagram shot, another $5 million for the Facebook post and another $5 million for the tweet, totaling $15 million.

Other fun notes? Activities in the home may be "potentially hazardous and you should not participate unless you are medically able and properly trained," and risks include "minor injuries to catastrophic injuries, including death."

Here's the thing: These confidentiality agreements aren't that uncommon in Hollywood. But we doubt Lil Twist has this kind of cash to throw around, so he may want to be careful next time he snaps himself rolling weed in Bieber's mansion.