A combination of flexing and gesturing. Commonly seen among men in their early twenties gesturing during conversation in a way that lets us all know how jacked and tan they are. Primarily used as a method of flirtation.
Person A : Look at Chad over there, he's gripping that beer bottle so hard right now.
Person B : Oh no brah, he's flexturing, he just wants that girl to recognize how vascular his forearms are.
a small, flexible adjustment or modification
I just made a flexture to the design to improve its usability