Combination of a serb and a retard.
Most serbtards are 13-year-old keyboard warriors who are LARPing e-chetniks on Discord.
Random user: Hey, srebrenica genocide was a really bad thing!
Serbtard: Srebrenica genocide didn't exist!!!1! *shitposts retarded meme about Ratko Mladić and Srebrenica*
Random user: Shut the fuck up, serbtard.
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.