It's just like DPR. He would get all of his BTC confiscated, but he probably has a brainwallet. He can claim he lost it all on SatoshiDice or say he got it stolen  but we know that's not true and we can't do anything about it. He probably has all his fortune in cold storage. Your friend should do the same!

Tl;dr: Brainwallet > Cold storage > don't talk about BTC. It's that easy.