Big Fat Liar — John Whitman

Jason doesn't always tell the truth -- but everyone knows he's just exaggerating to make things more interesting. And he doesn't always do his homework, so he's pretty pleased with himself to have done a great job on his latest creative writing assignment. When he leaves it in a cab by mistake, no one believes he really did
the work -- but that's not the worst of it. A high-powered Hollywood executive just happened to take the same cab, he just happened to find Jason's paper, and he just happened to turn the idea into one of the most successful movies of all time. No one believes Jason's claim that he's responsible for the mega-hit, but he's not about to let anyone steal his idea. Because this time he's telling the truth, and he's going to prove it!