A story or fact that is so untrue or fabricated that even the person informing you is unaware of how untrue it is and will "swear" that it is in fact true. It isn't, it is a lie.
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.