COREY TAYLOR To MACHINE GUN KELLY: You Don't Get To 'Run Your Mouth About Bands That Have Been Doing This For 20 Years'

SLIPKNOT frontman Corey Taylor has blasted Machine Gun Kelly, saying the rapper-turned-rocker doesn't get to "run [his] mouth about bands that have been doing this for 20 years." The war of words started last September when Machine Gun Kelly and SLIPKNOT performed at Riot Fest in Chicago. "You wanna know what I'm really happy that I'm not doing?" Kelly -- real name Colson Baker -- said during his performance, according to a video shot by a fan. "Being 50 years old wearing a fucking weird mask on...