After a certain point of inebriation, one begins to say things that sound good in their current mental state, any of which said sober would sound utterly retarded.
Person A-"You know I've always loved you."
Person B-"That's justDrunk Sincerity, go sleep it off."
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.