Knockout is a song by Lil Wayne from his album Rebirth. It features Nicki Minaj rapping near the end of the song and singing the chorus. The song charted on the Billboards Hot 100 list due to strong digital sales with the albums release. According to FMQB, the song will be sent to U.S. radio in May 2010. This song revolves around Lil Wayne's personal relationships with a diverse group of women.