Funnyman Jack Black took celebrities taking donation calls at Friday night's Stand Up 2 Cancer telethon in America to task - by demanding they phone each other with pledges.

The Tropic Thunder star admitted he has watched celebrity telethons as a cynic in the past - and he wanted to make sure this TV special would be a big winner. He said, "You know that if one of those lucky so-and-so's donated two per cent of what they made, we could all go back to Project Runway." He then tackled actor Josh Brolin, who was in the middle of a pledge call and ordered him to put the phone down, yelling, "Hang up the freaking phone!"

Black then told Brolin to call comedienne Ellen DeGeneres, who was seated a few desks away from the movie star on the Kodak Theatre stage, adding, "Make a pledge. What did you make on the Coen Brothers (film - No Country For Old Men)?"

Black then turned to the cameras and assured the viewers watching the show, "I'm gonna make these gravy trainers pony up."

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(This news article provided by World Entertainment News Network)