Disaster Movie (2008)

In the year 10,001 B.C., a caveman runs away from a predator through a plain and immediately gets into a fight with Wolf. After defeating him, the caveman then encounters the predator: a saber-toothed, gasoline-drinking Amy Winehouse, who after checking her Facebook account, informs him that the world will end on August 29, 2008 (the film's release date) revealing that their fate lies in a crystal skull. The film flash-forwards to the present, treating the first scene as a dream sequence of Will. He then finds out that his girlfriend Amy is having an affair with Flavor Flav, and she breaks up with Will because he is not admitting his true feelings for her.