National Lampoon's Bagboy (2007)

Phil Piedmonstein (Paul Campbell) is a young university student. All his life he has been a slacker and has never really excelled in anything. One day he discovers his true talent when a few of his friends observe him bagging groceries at an extremely rapid rate. They suggest to him that he consider entering the world of “competitive grocery bagging’. Phil, who’s never heard of this “competitive sport” laughs at it in the beginning, but later sees that it may be his chance at glory and proving that he is more than just an average Joe. What he finds is cutthroat world of deception and immoral practice, and if Phil is to succeed he must push his ability to the limit.