Someone who silently waits in a bathroom stall until everyone else is gone before they will do or finish their shit business.
I was in the stall reading the paper for a long time, when I suddenly heard someone in the next stall cough. I thought "who knows how long that little shit camper has been waiting for me to leave".
I almost decided to have a shit camp-off just to see who caved in first.
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.