Standing for "Best Friend For Life," BFFL is used between people that like each other, but know that they won't be friends in the afterlife. Not as binding as BFF ("Best Friends Forever").
Dave: "Hey BFFL, I was thinking. We're close friends. Why don't we start calling each other BFFs?"

Jeff: "I'm sorry Dave, I just can't make that kind of commitment. However, if we do happen to be best friends in the afterlife, I'll definitely upgrade our relationship."

Dave: "Thanks man. I really appreciate it."
by sammysf October 26, 2010
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"After having a friendship for 40 years Mary and Sharon consider each other BFFL's"
by Alexander Sedler October 30, 2003
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BFFL is a term used to describe an unbreakable union between friends. Typically used between two drunken girls at a Denny's after a night of drinking and shenanigans.

A BFFL is not spoken letter by letter in abbreviated form example- B.F.F.L. pronouncing the letters individually makes you a dumb ass and gives it less meaning.

A true BFFL is pronounced as a word in whole, when spoken properly it should sound like (BIFFEL) but always be spelled BFFL

BFFL can also be used as a noun example- "We are BFFLING"
Heater is Belinda's BFFL

Belinda is Heather's BFFL

When Heather and Belinda go out drinking and get faded they are BFFLING to the max.

BFFL Heather Belinda BFFLING
by Atlas mommy July 30, 2013
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best friend for life- your shoulder to cry on, your person to shout all your shit to, the person who will always be there. a person who you will ALWAYS love, even if they're not always there. u can depend on this person because you know they are always ready with an axe to kill whoever hurt you. and also the one you can be a dork around, and not care. also NEVER a bitch.
Claire and Maddie are such dorks.

No, they're just BFFLs.
by layspotatochipsROCK May 13, 2010
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best friends for life

A BFFL is someone apart from a friend. You can't, and won't, hide things from this person. They're as close to you as family.
Even the eight years of separation couldn't come between them, they were without a doubt BFFL's. They never hid anything from eachother.
by xLIVExLAUGH xLOVE March 20, 2008
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best friends for life - e.g. a load of bullshit used by teenages bitches to get things from others.

A constant change in 'BFFL' should logically mean that it should be called 'BFFAFMTIDYFSMP' - Best friends for about five minutes then i ditch you for someone more popular.

The point is, if someone calls you there 'bffl' stay away, if they ment it they would take the time to say 'best friends' and not the bullshit shortened version :)
'oh hey'

'hi there'

'just thought i'd let you know your my bffl'

'omg, your mine too. ily.'
'ily more babe. Now can you dump your boyfriend because i want to fuck him.'

'sure, i'd do anything for you because your my bmfl'

5 minutes later, after the girl has dumped her boyfriend and the other girl has made a move.

'yeah, i'm moving on because i dont think being your bffl is good for my reputation, your abit dorky/ugly/fat
by noimnother April 17, 2010
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