a louis vuitton "rag" is a scarf, bandana, bandeau, etc. It is worn either around the neck, out of your back pocket, tied to your louis bag, or through your belt loop.
brand new outfit wit a louisrag, tied through my belt loop or my louis bag
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.