Robert Downey Jr. Has 'Due Date' But No 'Hangover 2'

When actors Robert Downey Jr. and Zach Galifianakis sit in the same room together, anything can happen -- and does. Starring in the upcoming road comedy "Due Date," the two funnymen delighted "Extra" with their antics -- talking about insults and whether Downey would be up for a "Hangover 2" appearance.

"It's possible, but I can't be bothered," the actor deadpanned. "I'd love to work with Zach again, but I'm not going to go do a 'day' on his sequel. Let's not kid ourselves. Besides, they've had enough squabbles over their paltry salaries. They can't afford me."

Seriously, the two have a natural rapport, even though Galifianakis said the relationship comes with its own set of "insults." Downey remembered, "Did I say you need acting lessons?" Galifianakis corrected, "Classes." "Well, that shows I've never been to one," Downey Jr. laughed.

Watch the hilarious interview!

"Due Date" will be delivered to theaters Nov. 5.