While shooting a game of pool, a person will drop their trousers, "prairie dog" a turd out of their anus, chalk said turd, make a shot in any hole on the table, then slowly suck the turd back into their sphincter, while never letting the excrement touch the pool table.
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.