Bffism 

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.

Janny: I TOLD YOU! STOP BEING A SLUT!

Car: Awwww - I heart you too! by the way, your bffism stinks!

Bffism by Car Sun- August 25, 2010

bffism 

Word created by Mel and Lily to express another way to say “bffsie”

Mel and Lily’s bffism is off the charts today!

bffism by kous_bitch September 4, 2023

Biffism 

Coined by the popular character Biff Tannen from the Back To the Future movies, when one takes a known "exit" phrase and switches the ending so it no longer makes any sense. Often used for the enjoyment of obtaining a double take from the person with whom you are conversing.

Instead of telling McFly to "Make like a tree and leave," Biff told McFly to "Make like a tree and get outta here," thus committing a Biffism.

Biffism by OneNation October 7, 2007

bffsm 

best friends for six months; as coined by Jimmy Fallon and Stephen Colbert

Tracey: Hey can I borrow some money?
Victoria: No way!

Tracey: Oh my god, you are so not my bffsm anymore.

or

Dido: Aeneas is my bffsm because he left me even after our cave sex, to found the Romans.

bffsm by Misenus April 17, 2011

bffimrf 

Best Friend Forever I Mean Really FOrever

I'm about to watch Pregnancy Pact online?
Where???
Here (link)
Thanks bffimrf

bffimrf by zobothehobo January 25, 2010

Buffism 

To be so knoweldegeable about a subject that it as if you have worked out your brain to become buff, thus buffism

That will discredit your movie buffism if you recommend a movie solely because the actress is hot.

Buffism by Concessionist October 26, 2011