The Hangover co-stars Bradley Cooper and Zach Galifianakis went to war over the Silver Linings Playbook actor's Oscar nomination during a spoof interview for the wacky funnyman's periodical Internet chat show Between Two Ferns.

After introducing his guest as the star of Silver Linings Cookbook, a clearly unhappy Galifianakis asked, "How's bragging camp going?", prompting the two friends to start yelling at each other.

Cooper lost his temper and threw a plant at the host and then pretended to smash a faux-ceramic pot over his head.

Standing over Galifianakis, Cooper then appeared to kick the host as he lay on the floor.

The clip also features Galifiankis chatting with other Oscar nominee pals Jessica Chastain, Sally Field and Amy Adams, while former child star Emmanuel Lewis shows up pretending to be Daniel Day-Lewis.