Some dude that actually was successful in life making some epic games like jazz jackrabbit and unreal tournament and other shit, but then he decided to drag all developers to work on fortnite and ditched the entire unreal tournament community in the dumpster to follow his gold mine.
Epic games developer: Hey, when are you going to release our next UT4 patch?
Tim Sweeney: Shut up and finish that fortnite emote you little shit.
A: Yo I just abandoned two triple A games that my company was working on for this random animated kids crap.
B: Are you Tim Sweeney?
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.