Common romance novel abbreviations cheat sheet

If you spend any time at all on book Twitter or Facebook, you'll notice a bunch of abbreviations are used. Some of them are fairly obvious. Others...not so much. So, in case you find yourself puzzling over an abbreviation, here's a quick cheat sheet you can reference. (Please note, this list is by NO MEANS exhaustive. These are just some biggies I've noticed.) You're welcome:  

Abbreviation	Meaning
ARC	Advance Review Copy. Authors give them out sometimes before a release to drum up reviews and PR.
BBF	Book boyfriend
BBBW	These books have a Big, Black, Beautiful Woman as the heroine.
BBW	These books have a Big, Beautiful Woman as the heroine. Could apply to a heroine of any race.
​BDSM	Bondage & Discipline, Dominance & Submission, Sadomasochism & Masochism
BOB	Battery Operated Boyfriend
BWWM	Black Woman, White Male romance
DNF​	Did Not Finish
DUBCON	Dubious Consent (there are various degrees, of course, but this is seen by many as rape-y)
FF	Female, Female romance
H	Hero
h	Heroine
HEA	Happily Ever After
HFN	Happy for Now
IR	Interracial Romance
KU	This means the book is in Kindle Unlimited
LGBTQ	Lesbian, Gay, Bi, Transgender, Queer romance
MC	This means the main character is in a motorcycle club
MF	Romance with a Male/Female pairing
MMF	Romance with a 2 males and a female
MM	Romance with a Male/Male pairing
MPreg	Book is set in an alternate universe where males can get pregnant
NA	New Adult romance
TBR	To Be Read
TSTL	Characters that you deem Too Stupid Too Live

But what about you? Seen any abbreviations that vexed you? Let me know! Maybe I can help...