Sean Penn shows up to 'The Late Show' on Ambien

Sean Penn gives a weird interview on The Late Show with Stephen Colbert, he shows up on Ambien and starts smoking cigarettes.

Emily Treadgold

Sean Penn had an interesting interview with Stephen Colbert. The eccentric actor went on the show to promote his new novel.

He showed up and immediately told Colbert he was still riding the "Ambien train" a little from the night before. He also immediately started smoking a cigarette and Colbert hilariously put out an ashtray for the guest.

"I've interviewed you before. How do you tell Sean Penn on Ambien from Sean Penn not on Ambien?" Colbert asked. "Because you lay back in interviews in a really big way." Penn responded, "I think it's pretty much the same. There's a lot of times I'm just regular tired."

Im doing well. Youve inherited a little bit of the Ambien I had to take to get to sleep after a red eye last night.

Sean Penn
The Late Show With Stephen Colbert

Penn was there to discuss his novel Bob Honey Who Just Do Stuff which is about a septic tank salesman who turns into a mallet-wielding assassin. He also talked about his departure from acting.

He said, "The greatest thing that an actor can bring to the party is to play well with others - it's the collaboration. And I increasingly don't play well with others and so it becomes less enjoyable. I love that process when I love it, but I'm not loving that anymore. And that's really why I finally came out to writing a novel."