Avon flex

A chinese person who thinks that they are cool so they put shitty tatoos and sing shitty raps.

"Omg! Is that Avon Flex, fucking fag"

by Aig group May 12, 2016

Sumo flex

To brag or boast about your personal belongings or accomplishments

Man Keaf just got a new Rolex he was on Snapchat sumo flexin

by BlatlanticK ReKords May 5, 2018

Flex Boi

A gay kid that you should stay away from or he will try to rape you.

Stay away from Flex Boi.

by Flex Boi October 16, 2019

Flex Day

December 26th is flex day. Show off all of your expensive items to your friends. You can also flex with the new items you got at Christmas.

"Billy it's December 26th which means it's flex day, I bet you don't have the iPhone 11 Pro Max."
Billy answered while holding back tears, "you're right Joe, I don't."
Billy replied, "wait, who's Joe?"

by Andy Andy October 27, 2019

Flex

When you flex your girl, your showing her off to everybody posting pics with each other & being a simp because you want everybody to be jealous.

Damn I just got a new girl her names kyleigh I be flexin her cuz she’s the baddest bitch in town.

by Flex yo girl December 5, 2020

Feel Flex

When you feel good and alpha af

I feel flex when I hit a PR on bench

by Tryceracrocs December 14, 2020

casu-flexing

When, usually a man, takes a picture of himself with his muscles flexed but is trying to look like he's standing casually.

"Look at the pic of this dude casu-flexing."

by Universe42 December 15, 2020