Originally used as an expression of excitement or emphatic agreement, this bastardized contraction of two contradicting slang words can also be shortened and used in many ways to complete an expression. Said with enough conviction and it'll even make others start using it.
Heard in the most random of places, like Texas, Ohio and Florida. Connection unknown.
E: I finally bought the game you've been wanting me to play on Steam.
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.