Armeries is a code/nickname used by Kpop community to shit talk about BTS without the fandom knowing. The directed fandom (Initially Army) found out about this nickname, and since they are crackheads they found it very funny and now use it on a daily basis. Armeries is now considered as the second name of the Army fandom. It is now added to the long list of codes/nicknames the fandom found such as: Botmys, Sushi stans (Can be used by Western Stan only!), Ratmys, Armchair, Armpits etc...
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.