a grouping of slutty girls in one place who are down to fuck the living shit out of the first cock they see (this word is derived from Halo 3's Killtacular)
Bro, you just see all those girls that walked in. Can you say "slut-tacular"?
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.