François talks dirty to Sheeni in the boarding school ("I want to tickle your bellybutton from the inside", etc.) Director Miguel Arteta revealed on the commentary that all those lines came from researching internet porn sites.
Justin Long plays Portia Doubleday's (Sheeni) older brother in this film. In real life he dated her older sister Kaitlin Doubleday. The two also played a couple in the Waiting... (2005).
Part of this movie was filmed in an actual trailer park in Wixom, Michigan.