A
AFAIK (As Far As I Know)
AFK (Away From Keyboard)
AKA (Also Known As)
ASAP (As Soon As Possible)
B
B4 (Before)
BAE (Before Anyone Else)
BFF (Best Friends Forever)
BFFL (Best Friends For Life)
BID (Break It Down)
BRB (Be Right Back)
BTW (By The Way)
D
DIY (Do It Yourself)
DM (Direct Message)
E
EMOJI (Emotional Icon)
EOD (End of Discussion)
ETA (Estimated Time of Arrival)
F
FAQ (Frequently Asked Questions)
FBF (Flashback Friday)
FOMO (Fear Of Missing Out)
FTR (For The Record)
FTW (For The Win)
FWIW (For What It's Worth)
FYI (For Your Information)
G
G2G (Got To Go)
GG (Good Game)
GMTA (Great Minds Think Alike)
GR8 (Great)
GTG (Got To Go)
H
H8 (Hate)
HBD (Happy Birthday)
HBY (How About You)
HMU (Hit Me Up)
I
ICYDK (In Case You Didn't Know)
ICYMI (In Case You Missed It)
IDK (I Don't Know)
IIRC (If I Remember/Recall Correctly)
IMHO (In My Humble Opinion)
IMO (In My Opinion)
IMY (I Miss You)
IRL (In Real Life)
IYKYK (If You Know, You Know)
J
JK (Just Kidding)
L
L8R (Later)
LMK (Let Me Know)
LOL (Laugh Out Loud)
M
MFW (My Face When)
N
NVM (Never Mind)
O
OMG (Oh My God/Gosh)
OOMF (One Of My Friends/Followers)
OOTD (Outfit Of The Day)
OP (Original Poster)
OT (Off Topic)
OTP (One True Pairing)
OTW (On The Way)
P
POV (Point Of View)
PPL (People)
R
ROFL (Rolling On the Floor Laughing)
RSVP (Répondez S'il Vous Plaît - Please Respond)
S
SMH (Shaking My Head)
SOS (Save Our Souls)
T
TBF (To Be Fair)
TBH (To Be Honest)
TBT (Throwback Thursday)
TFTI (Thanks For The Invitation)
TFW (That Feeling When)
TGIF (Thank God It's Friday)
TIL (Today I Learned)
TL;DR (Too Long; Didn't Read)
TMI (Too Much Information)
TTYL (Talk To You Later)
TTYN (Talk To You Never)
TY (Thank You)
TYT (Take Your Time)
U
UGH (Expression of Disgust)
W
W8 (Wait)
WDYK (What Do You Know)
WYD (What You Doing)
WYM (What You Mean)
Y
YOLO (You Only Live Once)
YW (You're Welcome)