Drillbit Taylor

Drillbit Taylor is a 2008 comedy film starring Owen Wilson as the eponymous character and based on an original idea by John Hughes. It was directed by Steven Brill and the screenplay was written by Kristofor Brown and Seth Rogen. Paramount Pictures released the film on March 21, 2008.

On the first day of high school, Wade and Ryan witness two bullies, Filkins and Ronnie, attack a geek, Emmit, by stuffing him into his locker. Wade intervenes. Filkins and Ronnie begin endlessly targeting Wade, Ryan and Emmit.Wade suggests hiring a bodyguard. They place an ad on the Internet, and after a series of disturbing interviews with excons and hired guns, they end up selecting Drillbit Taylor Owen Wilson. Drillbit pretends to be a martial arts expert and mercenary, but is really a homeless beggar. His real intention of becoming their bodyguard was to rob them and use the money to buy a ticket to Canada. Drillbit tells the boys to find some common interests and become friends with Filkins and Ronnie. Ryan challenges Filkins to a rap battle, but gets carried away and ends up humiliating Filkins. As an angry Filkins, alongside Ronnie, ambushes Wade, Ryan, and Emmit. The boys try using a tactic Drillbit taught them, but it ultimately fails. The boys are furious with Drillbits teachings. But they decide to bring him to school as a substitute teacher, and in that capacity he is able to protect them. While there, Drillbit meets a teacher, Lisa Zachey Leslie Mann, and they start a relationship. ........

Source: Wikipedia