This phrase is usually used as "You can stuff your sorries in a sack, mister!", meaning that however much a person apologizes, their apology will not be accepted. Made popular by George in the Seinfeld "India" episode.
Jerry: George, I'm sorry I slept with Nina.
George: You can stuff your sorries in a sack, mister!
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.