GEORGE CLOONEY celebrated his Golden Globe win with Big Macs and GF STACY KEIBLER was none too pleased! After nabbing Best Actor honors for “The Descendants,” gorgeous George sent two assistants out to McDonald’s to grab 100 of the hefty burgers for a private bash at his home, sources say.“George rarely eats fast food, but he has a thing for Big Macs and the craving hit after the Globes,” a source told The ENQUIRER.The 50-year-old “Ocean’s Eleven” hunk barely picked at the fancy cuisine laid out at the award show’s after-parties at The Beverly Hilton, the source revealed.“George did the obligatory hand-shaking, hobnobbing and posing for photos after the show,” the source added, “but by 10 o’clock, he was ravenous. He looked at his girlfriend Stacy Keibler and said, ‘You’re not going to believe this, but I’m having a Big Mac attack!’“Stacy looked concerned until she realized that George was craving greasy food. He doesn’t like hanging out at industry parties too long, and he’d invited a bunch of friends to an after-party at his home. So he told two assistants to pick up 100 Big Macs.”The actor’s assistants had to stop at three Mickey D’s before they could rustle up enough grub, and then they hauled it all to his Studio City crib, said the source.“George celebrated his big win with Stacy, some close friends, crew members from the film and his Big Macs – just like a normal guy,” said the sourceWait ‘til he sees cholesterol levels!