I live in Kensington and don't hear it much at all up there from either UMC or working class folks, both white and black (+ Latino + Asian for that matter). I've heard it 100% from black folks in West Philly (can't tell socioeconomic if UMC or working class though). I haven't heard it much from UMC white folks but I don't spent a lot of time with them so might just be sample bias.