Machine Gun Kelly Boo'd During "Rap Devil" Live Performance At Fall Out Boys Concert. While he performed his new song "Rap Devil" on stage, MGK was booed by the crowd, obviously siding with Eminem…. Read More Uranium Music NewsSonic WavesSeptember 19, 2018Machine Gun Kelly, MGK, MGK bood, MGK booed, Eminem vs MGK, Uranium News, Uranium WavesComment