A personality trait formed of boasting about sex/sexual activities usually done by a person who has recently begun having sex after a long dry spell. The change in subject to sex in the group is also likely to have been brought up by the same person, making tenuous links to otherwise non-sexual discourse.
(Flexing about sex)
(Flexing about sex)
Person 1: Jake wouldn’t stop going on about how many times he has sex last week
Person 2: yeah he’s got sex-flex at the moment
Person 2: yeah he’s got sex-flex at the moment
by Plsplsplsno July 13, 2020

Fully dedicating your time and effort into unlocking an acheivement in a game to the point where you haven't showered in days and then sharing for everyone to see in a sort of bragging kind of way
You seen the new gun that just came out in COD? It literally just came out yesterday and my friend unlocked everything for it already. It was all over his social media. Major sweat flex.
by AwesomeAlex808 January 26, 2020

by Snuffercakes June 3, 2015

Person 1: Yeah, I have a $4500 PC. It has a 3090 in it.
Person 2: Stop fucking passively flexing, you dickhead.
Person 2: Stop fucking passively flexing, you dickhead.
by Ding dong, the bitch is dead! November 3, 2021

Where a "flexer" uses someone else's flex power and pass it off as their own therefore committing Flex Fraud
Flexer: look at my car collection in my garage
Friend of the flexer: Isn't this Davids? why are you committing flex fraud?
Friend of the flexer: Isn't this Davids? why are you committing flex fraud?
by FadingSins January 18, 2020

A "Calvin Flex" is a braggadocious remark used when an individual has a lack of redeemable characteristics and has to rely on bragging about possessions and/or small achievements as a means to validate self-worth when receiving praise or the interest of others. Those who use such statements will often times be ignored or made fun of. This is due to the unwanted and awkward implementation of a"flex" used during a conversation. A "Calvin Flex" is often used when having a conversation with a woman who has a physical appearance rating between 2/10 - 10/10 (beggars can't be choosers).
Girl: Hey, let's go out to eat!
Boy: I don't like eating in my car 'cause I don't want to make a mess in my brand new 2019 Honda Civic EX.
Girl: Wow, nice "Calvin Flex"
Boy: I made bread.
Boy: I don't like eating in my car 'cause I don't want to make a mess in my brand new 2019 Honda Civic EX.
Girl: Wow, nice "Calvin Flex"
Boy: I made bread.
by r/nicecalvins December 23, 2020
