not "all caps" just when you use a capital letter at the beginning of a sentence. it's like being formal but being formal in a no formal conversation is weird. so don't :)
friend 1: "Hey want to go out tonight? I found a nice place. What you think?"
friend 2: "ig it looks nice but why are you talking with capital letters..? it's to formal and weird, go look it up"
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.