Fat Lip

"Fat Lip" is a song by Canadian rock band Sum 41. It is the fourth track on their debut album, All Killer No Filler (2001), and was released as the lead single in April 2001. It is the band's most successful single to date, topping the BillboardModern Rock Tracks chart. It peaked at number 66 on the Billboard Hot 100 chart and at number eight on the UK Singles Chart.