"Like It's Her Birthday" is a song by the American band Good Charlotte, taken from their fifth studio album, Cardiology. It was released as the album's first single on August 24, 2010. Written by the band brothers Benji & Joel Madden, with additional writing and full production of Don Gilmore, the song is a pop punk song that talks about having fun with a girlfriend who likes to celebrate everyday like it was her birthday. The song received positive reviews from music critics, who praised it for its catchiness, funny lyrics and danceable content. The song was a big success on the ARIA Charts, reaching the top-ten. The band premiered the song live for the first time on May 22, 2010, at the 2010 Bamboozle Road Show in Charlotte, North Carolina. A version featuring Tonight Alive was also released, though they do not appear in the video version. The music video was released on September 21, 2010 on YouTube featuring shots of the band performing in a dark room switching between scenes in a club.