flex the rainbow

When the penis shaft bends slightly during homosexual anal intercourse

when you flex the rainbow in Shane he really likes it!

by Literalistic September 30, 2023

Flex seal your god damn mouth

Another way to tell someone to shut the fuck up because they won't stop being a fucking fortnite player

Kenny I with fucking flex seal your god damn mouth shut you gay fortnite player.

by I love izzie999 April 15, 2021

Flex

the word flex usually means to bend a joint, but in this case, to flex something means to steal something that is not yours, so its a verb.
my friend created this word so i added it because i thought it would catch on.
flex, present tense
flexed. past tense

"Alex, that dude just flexed your phone"

by diamondman200 May 6, 2018

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

Dunno flex

The flex is done, the motive and or action is no longer the plan or is finished.

Its a dunno flex for that man
Aii, dunno flex man I gotta go home.

by Ahliefam May 9, 2022

Flex tape

This thing can literally fix anything! It could have probably stopped the Titanic from sinking, too bad Alan Swift wasn't alive.. unless 🤔

Person 1: Dude I got some flex tape and it can fix anything!
Person 2: No way! Can it fix my life?
Person 1: I'm afraid not...
Person 2: Dang it.

by Apersonthathasnothingbettertod April 12, 2020

Flex on them Haters

Is when someone show off their wealth or their a body physical attribute (e.g. huge muscles, blue eyes, etc) on people he/she think that they envy them.

"Bro, I took a picture of myself after the gym and posted it on instagram to flex on them Haters."
"Man, this guy keep posting his new Ferrari on his social media feeds to flex on them haters"

by Rebel in a locked space June 10, 2022