Barstool founder Dave Portnoy apologizes to Ole Miss freshman Mary Kate Cornett

Ole Miss freshman Mary Kate Cornett had a vile rumor spread about her that she slept with her boyfriend’s father. It was amplified online by popular sports talk hosts including at least two personalities associated with Barstool Sports. NBC News’ Tom Llamas spoke with Barstool founder Dave Portnoy, who apologized to Cornett and said he thought his colleagues who posted about the rumors were “really stupid.”