This word originated when it was an amusing typo of the word 'bloody' while being used as: "I have no bloody clue." "I have no clooby clue." It has since then become a sort of insult or filler word. It can be used almost anywhere. It's a noun, verb, adjective, everything all in one!
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.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.