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Latter-day satiric genius or obnoxious fat guy? You be the judge. Suffice it to say that Slim was a glitch in the great rock & roll electrocardiogram, but his sophomoric, blues-based mayhem (played by the Sex Change Band) was sometimes funny, even when it was obvious and contrived.
Root Boy Slim (July 9, 1944 - June 8, 1993) was the stage name assumed by American musician, Foster MacKenzie III. Born in Asheville, North Carolina, he was raised in suburban Maryland, a few minutes from D.C. after his family relocated there. An exceptionally bright child, with parents able to afford a series of costly prep schools (including Sidwell Friends School), upon graduation, MacKenzie attended Yale University on a scholarship, but returned to Maryland upon receiving his Bachelor's degree. Once back in Maryland, he formed his own alternative rock band, including some young but talented musicians including tenor saxophonist, Ron Holloway, and an ensemble titled Crying Out Loud. Mackenzie's act was from that time billed as Root Boy Slim and the Sex Change Band, and found a dedicated fan base, although it remained confined to the Washington, D.C. area.
MacKenzie died in his sleep in his home in Orlando, Florida at the age of 48, and is buried in Fletcher, North Carolina. He was inducted into the Washington Area Music Association Hall of Fame in 2004.
MacKenzie was an intelligent yet incorrigible youth, who was asked to leave several private D.C.-area prep schools, including the Sidwell Friends School. He finally found his niche at Saint James School in Hagerstown, Maryland, a boarding school, where along with his studies, he played varsity football. He was accepted and attended Yale University on a scholarship, majoring in African American studies, and graduated in 1967. He was a member of the Delta Kappa Epsilon fraternity, where his fraternity brothers included future President George W. Bush. MacKenzie was a year older than Bush.
While at Yale, MacKenzie formed a band with classmate and fraternity brother Bob Greenlee, who was captain of Yale's football team. The band was named Prince La La and the Midnight Creepers. MacKenzie's growing dislike of authority and inner inclination to play pranks and his love of shock value expanded. Band members wore ermine capes, silver lamé hot pants and boasted that they were never invited for return engagements. The year after MacKenzie and Greenlee graduated, they returned to the DKE house during Yale's homecoming. Bush, who since their departure had become president of DKE, threw them out and banned them from the house.
After graduation, MacKenzie drove an ice cream truck in Washington, D.C. One day he suffered a psychotic break after a particularly high dose of LSD, and he climbed over the White House fence. The United States Secret Service apprehended him as he ran up the White House lawn. He told the officers he was "looking for the center of universe." They hauled him off to St. Elizabeths Hospital, the largest long-term mental hospital that serves Washington, D.C.) That incident led to a diagnosis of schizophrenia, for which MacKenzie was medicated for the rest of his life.
Sex Change Band 
Mackenzie adopted the stage name of Root Boy Slim, and formed a blues rock band, which he dubbed "Root Boy Slim and the Sex Change Band." His backup singers were called the Rootettes. The band members were stridently different than most club fare. Root Boy was fat, had greasy hair, and almost always seemed to be in a drug- or alcohol-induced stupor. The band was a fixture in the mid-Atlantic Blues/Rock scene, and favored a mix of Memphis-style boogie rock/blues.
Root Boy and company traveled the club circuit, until a self-produced recording caught the ear of some A&R representatives at Warner Bros. Records. That song was called "Christmas At Kmart" and it landed the band a $250,000 contract with Warner Bros. That tune and the follow-up LP demonstrated Root and the band's penchant for writing tunes relating to pop-culture.
Their most famous recording was "Boogie 'Til You Puke" from the debut album Root Boy Slim and the Sex Change Band with the Rootettes (Warner Bros. Records, 1978), which also featured "I Used To Be a Radical", "I'm Not Too Old For You", and "(You Broke My) Mood Ring". Most of the songs were written by MacKenzie, guitarist Ernie Lancaster, and bassist Bob Greenlee. The lyrics often satirized society and mixed in autobiographical elements from MacKenzie's storied life. Warner mismarketed the LP, and the band found themselves without a label—but not without a having had a European tour, in which Root Boy became enamored with his forefathers' homeland: Scotland.
During the same year, the band played a date at the Varsity Grill's Back Room in College Park, Maryland, which was one of the main bars popular with students at the University of Maryland, College Park. A riot broke out in the bar and outside on U.S. Route 1, which later led the College Park City Council to ban the band from future engagements in College Park. The ban was lifted in 1980, and Root Boy and crew triumphantly returned in a concert in the University's Ritchie Coliseum.
Miles Copeland III's record label, Illegal Records was a spin-off from I.R.S. Records, and Copeland signed the band and they produced their second LP, ZOOM on I.R.S. in the U.S., with distribution on Illegal Records in the UK. Despite the use of strong marketing efforts, the LP was just as commercially unsuccessful as the previous one, with the band being dropped by the label. Despite their disappointment, Root Boy Slim And The Sex Change Band continued playing the bar circuit along the Atlantic Seaboard and released four more LPs: Dog Secrets on Congressional Records, Don't Let This Happen to You and Left for Dead for Kingsnake Records, and Root Six on Naked Language Records.
Eventually, most of the original band members went their separate ways, reuniting mostly for recording projects. For nightclub performances, Root Boy was backed by a series of other bands, including Ron Holloway and Cryin' Out Loud, New Hope for the Criminally Insane, Capital Offense (featuring Wayne Tomlinson, Tommy Lepson, Tim Biery, Ron Holloway and Dominic Vigliotti), Barbecue Juiceheads, and the Humans.
Root Boy Slim and the Sex Change Band's fifth anniversary took place in 1982 at the PsycheDelly in Bethesda, Maryland, and featured home movies of Root Boy, who wore an orange and white checkered 7-Eleven clerk's shirt and a white 10-gallon cowboy hat throughout the concert. The band's 10th anniversary concert took place at The Roxy, a club in downtown Washington. A line formed hours prior to that show and the club's three levels were standing room only. By the time the fourth set began, there were at least 25 musicians on the stage who had recorded or played clubs with Root Boy during his career. That show was also the debut of the "Rich White Republican," a biting satiric attack on Republicans that prophesied the eventual election of George H.W. Bush to the White House. The band sold bumper stickers that read "Root Boy Slim owes me money."
On June 8, 1993, MacKenzie died in his sleep in his home in Orlando, Florida. After his death, the Washington Area Music Association held a memorial concert at The Bayou on K Street in Georgetown. Root Boy fans traveled from as far away as California to pay homage to "The Lenny Bruce of the Blues."
Slim's final resting place is in a grave beside his father's in Calvary Church Cemetery on Hendersonville Road in Fletcher, North Carolina, just south of Asheville. His grave is in the cemetery's northwest corner.