Tough guy Bruce Willis poked fun at 'Twilight's' Kristen Stewart and Robert Pattinson's relationship

Bruce WillisThe 'Die Hard: With a Vengeance' actor mocked the 'Twilight' stars – whose romance was thrown into turmoil last month when the brunette beauty publically confirmed she cheated on Robert with married director Rupert Sanders – during a sketch on the 'Late Show with David Letterman' last weekBruce jokingly broke down in tears as he attempted to deliver his catchphrase 'Yippee-ki-yay, motherf***er!' during a spoof trailer for fake film 'Twi-Hard: With a Vengeance', which shows his alter-ego failing to compose himself, due to Robert and Kristen's broken relationship, while negotiating with a villainHe cries: 'I'm a little distracted lately, I lost some friends Read more