an extension of the word ROFL. Typically used either to emphasize how much someone ROFL'd or in a cheesy satirical way making fun of people who use such retarded words.
Dude: So I'm at this party and Jason was wasted and he fell through the bathroom door with his pants down!
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.