From Sunday sermon to the strip club: The duality of Mistah F.A.B. FacebookTwitterEmail Dope Era clothing shop in Oakland, founded by rapper Mistah F.A.B. in 2011.Patricia Chang/Special to SFGATE The back office of the Dope Era clothing store in Oakland is like a teenager’s dream, filled with NBA Jam and Street Fighter II arcade machines and a classic NES piled underneath clutter that looks like homework the dog ate. It seems like a place that’s more play than work, and to watch Mistah F.A.B.’s wildly popular Instagram videos featuring him goofing off with his uncle Ernest “Unc” Holloway, you might think that’s the case.