acronym. Best serial killer friends forever. What, didn’t you have a high school yearbook?
Real citation: “This is where my theory breaks down though...unless Rudy is trying to get Dexter to disappear with him so they can be BSKFF.”
(bookwrm89, Dec. 12, 2006, "The Old Dexter Thread," Television Without Pity, http://forums.televisionwithoutpity.com/index.php?s=&showtopic=3143111&view=findpost&p=6834931)
Made-up citation: "I'm pretty sure marrying your BSKFF will disqualify you from joining the FBI, though it does keep a relationship spicy."