"He did tell me that," continued Franco. "But he said he was a little out of it so maybe he doesn't remember...I think he had a period where he was going a little off the rails. So maybe he was on something that night. My guess is he was on something that night."

Letterman then dished on the real reason he banned Korine from his show. "I went up to greet Meryl Streep," he said, adding, "She was not in there. And I looked around and found your friend Harmony going through her purse. True story. True story. And so I said, ‘OK, put her things back in her bag and then you get out of here.'" (The host later added he would be "more than happy" to have Korine back on the show.)

And there you have it: Don't mess with Meryl!