Mama Said Knock You Out was released on September 14, 1990, by
Def Jam Recordings. It was promoted with five singles, four of which became
hits: "The Boomin' System", "Around the Way Girl", the title track, and "6 Minutes of Pleasure". The album was certified
double platinum in the United States, having shipped two million copies. According to
Yahoo! Music's Frank Meyer,
Mama Said Knock You Out "seemed to set the world on fire in 1990", helped by its hit title track and LL Cool J's "sweaty performance" on
MTV Unplugged. The title song reached number 17 on the
Billboard Hot 100 and was certified gold by the RIAA. LL Cool J won
Best Rap Solo Performance at the
Grammy Awards of 1992. In
The New York Times,
Jon Pareles wrote that
Mama Said Knock You Out reestablished LL Cool J as "the most articulate of the homeboys", sounding "tougher and funnier" rapping about "crass materialism" and "simple pleasures". In Mark Cooper's review for
Q, he wrote, "This 22-year-old veteran has lost neither his eye for everyday detail nor his sheer relish for words."
Select magazine's
Richard Cook said, "LL's stack of samples add the icing to a cake that is all dark, remorseless rhythm, a lo-fi drum beat shadowed by a crude bass rumble. It could be
Jamaican dub they're making here, if it weren't for LL's slipper lip." Poll creator
Robert Christgau later named it among his 10 favorite albums from the 1990s. The album was included in
Hip Hop Connection "Phat Forty", a rundown of rap's greatest albums: "The LP's title track proved to be the single of the year and probably LL's best record since '
I'm Bad', while 'Eat 'Em Up L Chill' and 'To Da Break Of Dawn' was [sic] the sound of Cool J getting his own back – and in style." In 1998, it was listed in The Source's 100 Best Rap Albums. In 2005, comedian
Chris Rock listed it as the sixth greatest hip-hop album ever in a guest article for
Rolling Stone. In 2020,
Rolling Stone ranked the album at No. 246 on their updated list of the 500 Greatest Albums of All Time. The hip hop duo
Run the Jewels took their name from a lyric on the album's sixth track, "Cheesy Rat Blues". ==Track listing==