flex a grumpy

To take a shit outdoors

That burrito is kicking in. I'm fit to flex a grumpy.

by agroman2012 October 11, 2011

Flex on Gex

The act of flexing on Gex. May be used to refer to flexing on Gex himself, or applied more broadly to any situation.

I’m gonna Flex on Gex so hard tonight, Jackman’s gonna have to transport me in the ambulance.

by Fagbag jackson December 20, 2021

forehead flexing

When you flex your forehead muscles, like when Arnold Schwarzenegger screams anything.

Arnold Schwarzenegger forehead flexing while saying "IT'S NOT A TUMOR"

by TrafficKing May 12, 2014

Instagram flexing

When you make out with a beautiful chick just to show her off to your friends.

- Damn dog you kissed her for a minute and you flex the hell of out her instagram.

- yeah that was the point you fool but don't tell anyone
- straight instagram flexing !
- don't worry, she'll never know, I'll make out with her two more times I guess

by N0_D1gn1ty February 6, 2020

fat flex

A very hard flex that has an effect on people so strong they could end up dazed and confused

Damn man, he hit us with a fat flex when he walked in with the Gucci sweater and got two girls at once.

by fatflexer2000 February 9, 2019

Captain Flex

A gymaholic mound of muscle who's either at the gym, or using the weights bench in his living room, in a bid to get rid of his chubby, youthful looks. Most likely to be found constantly flexing in front of 6th formers and frequently spraying them down with his mr muscle spray.

Captain Flex's movement resulted in such a gun show that it caused his jeans to rip. "Damn you fifteens!"

by Durk Durka February 3, 2009

flexing on the book

Gangster that is hella religious

Yo my man Ronald Is flexing on the book

by Der vvv May 17, 2018