When all one does is wear sweatpants, eat takeout, and sit on the couch for days upon end. This may result in gaining weight...just like Rob Kardashian did.
"Didn't do anything this weekend except binge watch Netflix and troll Grub Hub. Rob Kardashian Syndrome to the max"
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.