Fatlip (b. Derrick Stewart in 1969) is an American rapper and former member of the alternative hip hop group The Pharcyde, which he was a member of from 1990 to 1995. After being fired from The Pharcyde, Fatlip began his solo career with the single "What's Up Fatlip?" in 2000, but did not release a solo debut album until 2005, when he released "The Loneliest Punk". Fatlip has appeared on songs by many artists, such as The Chemical Brothers, Neon Neon and N.A.S.A.