A Detroit Lions fan is going scorched earth in court after his viral sideline clash with Steelers star DK Metcalf -- and he’s swinging for a MASSIVE payday. Michigan man Ryan Kennedy filed a lawsuit in Wayne County Court on Tuesday … demanding a jaw-dropping $100 million over a Dec. 21 dust-up with Metcalf at Ford Field that blew up across the internet. Kennedy is now turning to the courts … going after Metcalf, the Pittsburgh Steelers, ex-NFL wideout Chad Johnson , Shannon Sharpe 's Shay Shay