When a young man has a haircut that is ridiculously short on the back and sides, and far too long on the top. Resulting in a look opposite to normal balding.
Barber: "Do you want a short back and sides?"
Customer: "Nah, I'll get a reverse balding please."
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.