As a form of destiny or fate, a Prom Fate is when you're going to prom with your prom date, then, before the end of the night, he/she either friend-zones or breaks up with you.
I met my Prom Fate last night, man. I miss her so much already.
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.