The ultimate form of flexing on other people.
It's often subtle and unintended but other people still pick up on the flex.
Person 1: "Hey does anyone have a phone charger?"
Person 2: "Oh, I have one in my car but I'm driving my dad's Audi today so I don't have it..."
Person 1: "BIG FLEX but okay..."
by Bjabbjo September 17, 2019
Having sex with someone's ex in order to show dominance.
Dude, Jake just big flexed on James.
by wynggoy February 18, 2021
You Deadass have a dick that can bend and go like a motherfucking helicopter in that wet ass pussy.
*during sex*
Oh yes daddy please use your big dick flex maneuver on me oh yea~
* Fucking DEMOLISHES THAT FUCKING BITCH LEAVING HER MOTIONLESS IN ORGASM*
by FrankTheDankyea February 12, 2018