Living in someone's house, without permission, while they are away for a longperiod of time, usually vacation. This act is usually performed by a crack headed neighbor, or a drifter that is aware of your whereabouts.
Them niggas be squating at Marry Janes house while she gone to Jamaica.
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.