"In Internet and text slang abbreviation, best friends forever or best female friend" Source and further information: http://en.wikipedia.org/wiki/BFF Some further meanings can be found here: http://www.urbandictionary.com/define.php?term=bff ------- ADDED ----- Some possibilities: - "And I can assure @Elena and LJ that BFF does not equal Best Friends Forever in this case. From Liz's reaction, we may not want to ever know. I've got a feeling it's classic Tracy Jordan level ick!" http://popwatch.ew.com/popwatch/2009/03/30-rock-the-bub.html - "BFF= Butt F*ck Fans" - "BFF=BEST F*CK FANTASY!" http://videogum.com/archives/sitcoms/30-rock-best-episode-this-seas_059901.html - "What DOES BFF stand for??? Outside the obvious I'm stumped!! And I won't even tell you what we've speculated..." http://www.tvsquad.com/2009/03/20/30-rock-the-bubble/ - "Does anyone know what Alec Baldwin meant by BFF on 30 Rock last night?" http://answers.yahoo.com/question/index?qid=20090320122419AAXGweK - "Urban dictionary has one meaning for BFF that might work: BFF - Butt F***ing Friend" - "This might be the first episode where I laughed harder a half an hour after it aired. My bf informed me that BFF stands for Butt F**king Fan...which killed me when I remembered Liz's "Why would you celebrate that?" line after Jack whispered to her. And then when Jack asked if Drew was a BFF. HEH!" - "To be fair, Alan did refer to "lemon party" in the context of the clearly-dirty "BFF" joke, and referred to the fact that "lemon party" forever scarred him. SO it's not like Alan didn't make it clear that there was something that may be unpleasant about the term. A basic rule, if there's a 30 Rock joke you don't get, don't Google it, because more times than not you'll regret it (I was one of those that searched "lemon party" when it came up back in season 1, and I still remember that picture.) And if temptation really overcomes you, at the very least don't do the search from work." - "BFF is a little different, I think. The most obvious possibility strikes me as a little inelegant, and doesn't quite go with "why would you celebrate that?" in my mind, Jack's one-time tryst with the former Vice President notwithstanding. I prefer to think he whispered something completely out of left field, like "Bobby Flay Fans" or something. But I suppose it's possible he meant "Butt [Fun] Fan" and had to whisper because there's no way to double entendre that expression into network appropriateness." http://sepinwall.blogspot.com/2009/03/30-rock-bubble-pretty-dumb.html