Lit
More recently, it has acquired the meaning "exciting," as well as a broader meaning along the lines of "excellent."
Basic
Used to pejoratively describe middle class white women who are perceived to predominantly like mainstream products, trends, or music. It's a useful insult. Like trashy or gauche.
jelly
being jealous or hating
lol
laughing out loud
hot mess
A situation or object in a state of extreme disarray. A disheveled or unbalanced person, particularly one who is nevertheless — or therefore — attractive.
fire / fya
something is amazing, extremely good, or on point, especially said of how someone feels or looks.
Throwing shade
Making a subtly mean comment about someone
Hangry
When you are angry because you are so hungry
yolo
you only live once
bae
Before anyone else. Baby/sweetie
Fierce
the combination of a positive mental spirit, bold words and unapologetic actions used collectively.
Bye felicia
An expression used to dismiss someone
Salty
The act of being upset, angry, or bitter as result of being made fun of or embarassed.
fomo
fear of missing out
Ghost
When you completely disappear after hanging out and showing interest
Slay
said when someone looks really good
Trolling
Someone who purposely tries to provoke others
Extra
excessive, dramatic behavior
TL;DR
too long, didn't read
finsta
a fake Instagram account
Gucci
Good / doing well / feeling fine
Clap back
A comeback filled with attitude
Spill the tea
To disclose information, especially of a sensitive nature and it could also refer to someone else's hidden truth—that is, gossip
#mcm / #wcw
man crush monday / woman crush wednesday
Weird flex but ok
Weird (or odd) flex but OK is a snarky, mocking internet slang response to when someone brags about something deemed unusual, bizarre, baffling, or questionable. Eg. a boast about owning a zebra or spending $1000 at Starbucks?