This Phrase, used by downtown Oakville, Ontario teenagers means simply:
Haggard - Completely wasted. Wasted can describe, being high or drunk.
Ass - A fun word to stick in the middle.
Bitch - Replaces the name of the person who is "Haggard."
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.