Jurgen Klopp was livid with a fan who invaded the pitch and slid into Andy Robertson as Liverpool celebrated their final goal against Manchester United.
The Reds roared to one of their greatest-ever victories on Sunday evening, hitting seven goals past their arch-rivals at a frenzied Anfield. Each of the starting front three of Mohamed Salah, Cody Gakpo and Darwin Nunez found the back of the net twice and Roberto Firmino added the final goal with seconds remaining.
It was a truly embarrassing defensive display by the Red Devils, many of whom lost all composure as a second half during which they conceded six goals wore on. As for Liverpool, it was one of the most famous results in the club's history - and one over-exuberant fan took things too far after Firmino's goal.