Insult used by thin, health-conscious people who pat their flat stomachs and say things like 'Gosh, I'm getting so chubby!', usually in the presence of their much larger friends.
Thin Girl - (patting stomach) 'God look at me! I'm getting so fat!'
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.