A response to let someone know they should stop commenting on the fact that you are expressing what they consider to be negative vibes, thoughts, feelings etc.
"I'm pretty sure that I didn't get the manager's position that's opening up in my department."
Friend: "You have to be positive... don't be sending negative waves out there."
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.