Pronounced "biffy", BFFI is used as a term of endearment for a great friend, whom you hope to be friends with longer than life, or forever, but rather, infinitely.
I consider Danielle, Hillary and Ashley BFFI's, I'd help them kick any ones ass and I know they'd do the same for me!
My BFFI and I are going to the mall. No, you're not invited, Paul.
(n). Acronym. Literally, "Big Mother F**ker In Charge", a term coined by workers to describe the manager with the greatest amount of oversight at their place of employment using the popular anacronym-as-job-description format so popular in corporate culture (CEO, COO, GM, etc.). May also be used in reference to anyone that assumes authority in a given situation.
"You want to go to lunch now? Hang on, and I'll check with the BMFIC..."
The many ways (strange/unusual/paranormal/hallmark/cheesy/corny/sweet/loving/controlling) your BFF behaves towards you and your shared friendship of devotion, adherence, usage, characteristic ,state or condition; which designates a doctrine to your referenced designated BFF.
-ism suffix (Greek) - formation of nouns which denotes practice or action from verbs.
Janny: Car - you need to get off your whorish way's on FB!
Car: Janny, thanks for your bffism all these years! Without your bffism, I would not be the same.
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.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.