Captain Flex

Dude with a slim build who sees himself as more of a Scottiah adonis body god
Usually found peacocking around the floor for no reason
Throws out a random flex when a member of the opposite sex is around

Look at BB over there peacocking round those hoes, he is the real deal captain flex

by Jonsnowknowsnowt July 27, 2016

flex Seal challenge

The Incredibly Popular Internet Challenge in which participants attempt to completely seal their asshole tight, and then attempt to shit.

Bro, Did you see that sick flex seal challenge video by Logan Paul? it was almost as good as the forest in Japan!

by Mr. Huffman November 6, 2020

Flex

A way of making your friends jealous of your new AirPods

Random person 1: Oh hey guys.. I got some new AirPods, I can listen to music with GOOD QUALITY now!
Random person 2: Ugh why the fuck are you flexing

by itsarga January 21, 2020

Flex

Verb, To share someone else's social media, especially on TikTok. It's like giving a shout out

Example 1: www.boredpanda.com relies on flexing many artists' work since they don't actually create their own content.
Example 2: That TikToker keeps flexing me on her videos. Maybe she wants more followers

by silasmarnerbitch July 10, 2022

Blindly flexing

It's flexing but the person doesn't exactly notice. You do though, it makes you feel bad about yourself, sometimes.

Lily: "Oh my gosh! My 2 Ipads couldn't work, so I brought 2 more. And remember when I was in 1st grade? I dissected a cow eye!"
Me: "That's cool, I guess. You also already said that story of dissecting a cow eye over 100 times, I don't want to hear it anymore."
Me (thoughts): "She's blindly flexing again . . . "

by odd, nefarious dumbass November 3, 2022

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

Erlenmeyer Flex

The equivalent of the modern-day term "flex", or as a verb, "flex-ing"; but with the intent of impressing fellow Chemists/Scientists/Students within said realms of academia or even mere hobbyists keeping the waters of "nerd culture" warm for all. One possible example could be a novel proposed synthesis for a specific analogue of an obscure compound -- would be a GigaChad level Erlenmeyer Flex and would almost certainly result in sexual intercourse (wearing the proper PPE, naturally)

The invention of the Erlenmeyer flask is perhaps the strongest Erlenmeyer flex the world has thus far seen - a true Science Sector Chad

by AorticKamikaze March 11, 2023