short for flexible, also can mean easy going, or down for whatever.
"Baby you want to go out tonight or stay in?" he asks. "I'm flex," she replies.
by BellaBelle June 29, 2012
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1. The preliminary acts to beating someone's ass.
A flex occurs when a trick ass mark is being a silly bitch and he/she recieves the big show.
That mark ass trick just scuffed my shoes, I'm about to flex his bitch ass.
A primary subject of recieving flexxing would be Alain P. because that dumb beaner is always running his mouf.
by Jason P. November 8, 2006
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Used in Call of Duty Zombies games where the players runs circles around zombies to collect a large mass of them. Can be used as a verb or a noun.

Also known as training or herding
"Im gonna run the skullcrusher flex"
"Im flexing in the diner"
"Don't fuck up my flex man, you're gonna kill me!"
by dance4lyfe_ December 10, 2012
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The act of being better than everyone else for a certain period of time. Can only take place on specific days according to ones work schedule. You are not allowed to flex on anything shorter than a 3 day. If it's a 3 day or longer you can flex but not on the first or last day the first day is to warm up the flex and the last is to cool down after flexing on everyone.
Bro I'm not trying to flex on this two day.

Flexing is secured

It's the middle of a three day, flexing unsecured.
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To dance, generally in the form of a man and woman with the woman's buttocks grinding against the man's genital area.
Pull dat gyal dey and take a lil flex na boy
by trinichic11 August 6, 2009
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Someone who always keeps up with the latest trends and is a fashion guru
“She was flexing with her new fur coat
by Obre Adams August 12, 2018
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