People who understand all the perverted jokes, but never tell any. They get the sexual reference, but would never use any (at least they don't admit it).
So-and-so are such perverted non-perverts, they only laugh and never say anything sexy.
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.