Full of it is a Teenage Comedy Movie revolving around a boy named Sam (Ryan Pinkston) whose habit puts him in trouble.
Sam Leonard is a seventeen year old boy. He is a math wizard but diminutive in stature. He is new in Bridgeport High and is more concerned about fitting in than with earning a scholarship. In order to do so a counselor suggests that he should start telling lies to become popular.
His false claims of basketball prowess and irresistibility to Carmen Electra are laughed at upon. Soon he becomes a habitual liar. When his lies start turning into truths Sam becomes the most popular guy in the campus. But at the same time he suddenly finds himself facing a whole new set of problems that he never expected.