"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 debuted at forty-four on the US Billboard Hot 100 due to strong digital sales with the album's release.
This song revolves around Lil Wayne's personal relationships with a diverse group of women. This song, with many Blink 182-esque qualities was written "ironically," according to Wayne.
The song received generally negative reviews from critics, most of which stated that the song was better meant for other rock artists and Wayne does not have a place in the song. Most critics also gave Minaj a negative review in the song stating that the song went by too fast for her to deliver a worthy verse.
As of October 2010 the song sold 519,000 digital copies according to Nielsen SoundScan.
The video was shot by director David Rousseau on February 6, 2010, where Lil Wayne spent 48 hours shooting a variety of music videos for multiple songs.