Permanent Midnight author Jerry Stahl is, bar none, this generation's king of junkie lit. Dark and hilarious, Permanent Midnight was an insta-classic that was made into a movie with Ben Stiller as the lead and Stahl has followed it with a succession of other nihilistic novels—including his latest, Happy Mutant Baby Pills. He and TheAfterPartyGroup's Anna David have known each other since Stahl blurbed her first book in 2005. Here they discuss heroin, sobriety, swearing, life coaches, meditation, yoga, writing and so much more.