When you totally destroy a guy. Beating him into submission and then for the sheer hell of it..... You start banging up the guys he hangs out with too.
Last night I Khabibed a dude for trying to hit on my wife and then I started whipping up on his buddies too.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.