Heads up: Terms marked Know This are sometimes used to hide conversations about drugs, sex, or risky situations. One term alone doesn't mean something is wrong — context matters.
Everyday Texting
LOL
Laugh out loud
LMAO
Laughing my ass off
ROFL
Rolling on the floor laughing
OMG
Oh my God
OMW
On my way
IKR
I know, right?
TBH
To be honest
NGL
Not gonna lie
IDK
I don't know
IDC
I don't care
IMO / IMHO
In my opinion / In my humble opinion
BRB
Be right back
BRT
Be right there
AFK
Away from keyboard
GTG / G2G
Got to go
TTYL
Talk to you later
LMK
Let me know
NVM
Never mind
NBD
No big deal
WYD
What are you doing?
HMU
Hit me up (contact me)
JW
Just wondering
JIC
Just in case
BTW
By the way
TMI
Too much information
SMH
Shaking my head
IRL
In real life
RN
Right now
POV
Point of view
FYI
For your information
ASAP
As soon as possible
TBT
Throwback Thursday
HBD
Happy birthday
TGIF
Thank God it's Friday
GR8
Great
B4
Before
PROLLY
Probably
PPL
People
W/E
Whatever
MYOB
Mind your own business
ICYMI
In case you missed it
DAE
Does anyone else?
AFAIK
As far as I know
TL;DR
Too long; didn't read (summary)
FTFY
Fixed that for you
Social & Slang
No Cap
No lie, for real
Cap
A lie ("that's cap" = that's a lie)
FR / FRFR
For real / For real for real
SUS
Suspicious, shady
GOAT
Greatest of all time
Stan
A dedicated fan ("I stan that artist")
Flex
Showing off
Slaps
Really good ("this song slaps")
Mood / Vibe
Relatable feeling or atmosphere
Cringe
Embarrassing or awkward
Ghosting
Cutting contact with no explanation
Salty
Bitter or upset
Thirsty
Desperate for attention
Lowkey
Somewhat, secretly
Highkey
Very much, obviously
Hits different
Feels unique or more meaningful
Slay
To do something impressively well
Based
Confident, not caring what others think
Bussin
Really good, especially food
Mid
Average, mediocre
W
A win ("that's a W")
L
A loss ("took an L")
NPC
Someone acting robotic, no personality
IYKYK
If you know, you know
Ratio
More replies than likes — a bad sign
Rent free
Can't stop thinking about something
Main character
Acting like the world revolves around you
It's giving
It has the energy of...
Rizz
Natural charm or ability to attract people
Understood the assignment
Did exactly the right thing
Relationships & Dating
BF / GF
Boyfriend / Girlfriend
BFF
Best friends forever
Talking
Casually dating, not official yet
Situationship
A relationship with no label
Shipped
Wanting two people to be together
Simp
Trying too hard for someone you like
Caught feelings
Started liking someone romantically
DM
Direct message — "sliding into DMs" means messaging privately
FWB
Friends with benefits
DTR
Define the relationship
XOXO
Hugs and kisses
ITE
Alright (casual agreement)
Know These
420 Know This
Marijuana / weed
plug Know This
Someone who sells drugs
lit Know This
Drunk, high, or an amazing party
turnt Know This
Drunk or high and having fun
molly / x Know This
MDMA / ecstasy
xan / xanny Know This
Xanax used recreationally
lean / syrup Know This
Codeine cough syrup mixed with soda
pressed Know This
Counterfeit pills — often fentanyl-laced
KMS / KYS Know This
"Kill myself / kill yourself" — often sarcastic but take it seriously
CD9 / Code 9 Know This
Warning: parent is nearby
POS Know This
Parent over shoulder
53X Know This
Sex (coded spelling)
GNOC Know This
Get naked on camera
NIFOC Know This
Naked in front of camera
WTTP Know This
Want to trade pictures?
IWSN Know This
I want sex now
1174 Know This
Meet at a specific place (usually a party)
Netflix and chill Know This
Hookup disguised as watching TV