Jabbar Kingston Brown Jr. (born February 26, 1997), known as Slimmy B, is a rapper from Crestside, Vallejo, CA. He is best known as a former member of Vallejo rap group SOB X RBE, being on their breakout song “Anti” along with Yhung T.O. He is a member of the SOB (Strictly Only Brothers) clique, which came together with the RBE clique to form SOB X RBE. After the group’s breakup in July 2020, he began releasing music with fellow SOB member DaBoii as SOB.

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