I'm Gonna Explode (2008)

Tale of a young couple who throw caution to the wind and set out in search of their true fate. Román is the son of a contemptible, right-leaning congressman. Recently enrolled in a new high school, the rebellious teen clumsily attempts to hang himself on-stage at the big talent show. Maru is the sole member of the audience to applaud, earning both students a day of detention. After bonding during the course of their punishment, Román and Maru grab daddy's gun, steal a Volkswagen, and hit the road bound for nowhere.

Source: TMDb