A sejizzle is basically a slave. Also known as a jizzmeister, a sejizzle serves obediently as court jester for the the upper titty crust of civilization (achdaddy, trashman tromon babatrangoush, Scotty2Hotty, gino de los filipinos, double gay, The Snake, etc., etc.)
Achdaddy: Hey sejizzlez, how'd you meet your girl?
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.