The greek version of laugh out loud. Originates from the fact that many greekwords end in -os.
You: Hey man, I made some tzatziki and put some mint and dill in it!
Your greek friend: That's not how you make tzatziki, no mint, no dill!
You: LOLOSS!
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.