When engaing in a debate and a person says something so outlandishly stupid, incoherent, or contradictory, that their opponent is left utterly speechless and dumbfounded. Usually used as a last last resort by somebody who's losing a debate and who knows his premise is invalid.
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.