No flex 

When a guy looks tough, but can't really pull any weight.

dont worry about him man.. he got no flex..

No flex by skeptikalia July 4, 2011

No flex 

Zone

Guy one: no flex

Guy two: ZONE!

No flex by Boogaloo_boi November 14, 2014

No Flex Zone 

A territory where you are not allowed to boast or flaunt. Flexing is similar to someone showing off or "stuntin'"

Colin: "Hey Terrence don't you know Daquan made this place a No Flex Zone?! Take all those chains and watches off before he sees you!"

Terrence: "Oh god I hope he isn't around, let me just take them-"

Daquan: "Any last words Terrence?"

No Flex Zone by Naj94 August 6, 2014

No flex November

During No Flex November, one is not allowed to flex in any way, both physically and mentally, including muscles, money earned, grades and sexual contact. No Flex November is often completed alongside with No Nut November, and after completing these 2 challenges you will gain mental advantage over your enemies, and physicall strenght out of this world.

Chris: Aye bro, you wanna do the No Flex November challenge?

Seb: Nah man I'm already doing the no fap challenge.
Chris: Bro we're gonna become gods!
Seb: Hell ye!

No flex November by zkrash November 1, 2018

No Flex Zone 

Slang; Usually a party, but sometimes any place where one doesn't have to compete for women. The girls already like the guy and there aren't any other men there who aren't good friends, therefore, one doesn't have to flex to woo the women. The term was coined by the Ear Drummas with their song of the same name.

Whattup bro, I got like five hoes here and me, it's a straight no flex zone, so just throw on some clean clothes and come quick, we can probably gangbang 'em all.

No Flex Zone by phantomvii June 7, 2015

No Flex Though 

When you want to brag, but you don't want to sound like too big of a douche.

Guy 1: "Aye homie. You ask out that G yet?"
Guy 2: " Man I took that trash OUT!! No Flex though."

No Flex Though by Not John Doe April 9, 2015