Acronym for Fuck Buddies For Life. Very Similar to Bff which is Best Freinds Forever, but just more profanity in the name to make it sound cool
The Original FBFLs are Cliff, Nick, Andy, Mike,and Charlie. Mike iz da Hater
Fat Buddies For Life. When two fat, or non-fat, or one of each, eat with each other, encourage eating, and generally like the same foods and have similar gustatory habits.
If Henrik sees Pavel eating, he has to join in. They are such FBFL's.