BlogMixtapes SOB x RBE’s Slimmy B Releases His New Tape ‘Problem Child’ By Ryan - 10/09/2017 0 107 SOB x RBE’s Slimmy B releases his new tape Problem Child. SOB x RBE is from Vallejo, California and Slimmy B is a part of the crew! The project has 16 records with features from Yhung T.O, Mistah F.A.B., Mozzy and more! Listen below! LISTEN HERE!