<P> "Scotty Doesn't Know" is a song written and performed by the American rock band Lustra . Originally written for the 2004 film EuroTrip, the song contains numerous lewd references to how Scotty's girlfriend Fiona has been cheating on him for an extended period of time; the song is written from the perspective of the person she is having the affair with . The song was eventually released on their 2006 album Left for Dead . The song peaked at #53 on the U.S. Billboard Pop chart, #39 on the Digital Songs chart and at #75 on the Hot 100, mainly due to the high amount of digital downloads . </P> <P> In the film Eurotrip, Scotty (Scott Mechlowicz) is dumped by his girlfriend Fiona (Kristin Kreuk) for the lead singer of a band (played in the film by Matt Damon). The band performs the song at a party Scotty is attending, and is praised by many characters in the film (including Scotty's parents and, eventually, Scotty himself) as being "catchy ." The song becomes something of a popular phenomenon, appearing on the radio and across the world; in Bratislava, the song has been remixed and is playing in a popular nightclub . By the end of the film, it has become so widespread and popular that Scotty's best friend Cooper is able to use it as his cell phone ring tone . </P> <P> "Scotty Doesn't Know" debuted at #89 on the U.S. Billboard Pop 100 for the chart week of July 22, 2006 . </P> <Table> <Tr> <Th> Chart (2006) </Th> <Th> Peak position </Th> </Tr> <Tr> <Td> U.S. Billboard Pop 100 </Td> <Td> 53 </Td> </Tr> <Tr> <Td> U.S. Billboard Hot 100 </Td> <Td> 75 </Td> </Tr> </Table>

Scotty doesn't know that fiona and me