The slap heard 'round the world struck Jake Paul on the left cheek Thursday night. Mike Tyson whipped his open-palmed right hand across Paul’s face at the weigh-in before their wild and weird and puzzling event.

Mike Tyson takes on Jake Paul in an eight-round heavyweight match at AT&T Stadium in Arlington, Texas, on Friday night (Netflix, 8 p.m. ET). The fight, sanctioned by the Texas Department of Licensing and Regulation,

Before storming off stage, the 227-pound Paul screamed his own perspective on the matter into the microphone: "Now, it's personal."