The ratio of people you are allowed to sleep with when drunk versus amount when sober. The drunk equivalant of sleeping with one person while sober is sleeping with three people.
Based on the Law of 1/3rd I'm not a slut, I only slept with six guys when i was drunk!
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.