Brad Pitt Answers Life's 'Big Questions' With Stephen Colbert On 'Late Show' - Watch Here!

Brad Pitt made a rare late night appearance on last night’s (May 16) episode of the Late Show With Stephen Colbert, and participated in another hilarious installment of “Big Questions With Even Bigger Stars“!

After making a joke that he hadn’t “been out in a while,” the 53-year-old War Machine actor laid back on the blanket with Stephen, 53, as they asked each other some of life’s deep, philosophical questions.

PHOTOS: Check out the latest pics of Brad Pitt

“Do you think mathematics are the underlying structure of the universe, or did we just invent it?” Brad pondered. Stephen replied, “I’m not sure if numbers are the underlying reality, but one thing is absolutely true: You’re a solid eight.”

Brad also poked fun at some of his biggest films as he and Stephen tried to make each other laugh with silly nicknames like “Colby Cheese,” “Stevie-C” and “Brad-imir Pitt-en.”

Watch the full segment below…