Someone who thinks they’re top shit because they’re upper class or privileged. These people take that for granted and are usually the most moronic people you will ever meet. Everything they say is like piss coming out their flap Of a mouth, hence piss flap.
“That rich old piss flap Mary is bragging about her dumbass new Ferrari”.
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.