An unkempt person of questionable intentions, whom appears to have lived a hard, deviant life, as clearly displayed by their gaunt and ravaged features.
Their mere presence usually fosters feelings of an impending threat to bodily safety and/or theft of personal belongings.
Direct eye-contact with such persons is to be avoided at all costs.
"Get a load of that filthy skegler on the street would ya?, best lock your doors, just to be safe..."
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.