rhyming way of sayin' later, particularly to a bro' or a best bud.
Mike always rushed from one place to another so quickly, the only way I knew he was out of the place was when he yelled "Later, frater!" to me just before the door slammed shut.
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.