1980s
1990s
2000s
2010s
2020s
100

Big whoop

The big deal / major issue (often used ironically)

100

Monet

Something that is pleasing at a distance, but disturbing close up

100

Peeps

A synonym for friends / friend group

100

Bae

A boyfriend / Girlfriend

100

Extra

To be "extra" is to be unnecessarily dramatic and over the top.

200

Gnarly

Dangerous, challenging, or overall exciting

200

411

Details on a situation or scenario. 

200

Newbie

Someone new and inexperienced to an activity

200

Yeet

To throw something (often with exaggerate force)

200

Bet

An exaggerated version of yes or sure thing

300

Choice

Good / High quality 

300

Fly

Looking good or cool

300

Bling

Fancy Jewelry and other stylish embelishments

300

On fleek

flawlessly styled, groomed, etc.; looking great

300

Fire

"Fire" is used to refer to something that is really cool and amazing.

400
Ralph

To vomit or throw up

400

Bounce

To leave (often unannounced to others)

400

Cash Money

To be really cool and solid

400

Earworm

A song that repeats over and over again in your head

400

Shade

The word "shade" can be used as itself to refer to a situation where someone illustrated sneaky actions toward someone or something.

500

Hotdogger

A showoff or someone who is a loud braggart

500

Get Jiggy

To dance or have fun in an active way

500

Barney Bag

An oversized backpack / purse

500

Milkshake Duck

a person (or thing) who becomes popular on the internet for a positive reason, but as their popularity takes off and people dig into their past, they become an object of outrage

500

Stan

"Stan" can be a noun for an overzealous and obsessive fan, and a verb meaning to be that kind of fan. It originated from an Eminem song of the same name.