Flex

Tense your muscles like you want to fight.

Amanda flexed on my x because she is jealous we are back together.

by Phishsticks May 27, 2017

Flex

to masturbate; to pull oneself off; to manually ejaculate; to flex

"have you seen that flick where that guy flex's right into that bitch's ear?"

by Flexmaster Flux April 01, 2003

Flex

To snog

Bob: OMG she looked so buff 2 day
Jim: Did you flex her?
Bob: Yeah man all day in the park

by Dragonmaster24 October 23, 2009

Flexed

Deep ass fucking by a huge dick.

I flexed her asshole so hard it tore.

by Jakeypoo97 May 29, 2013

Flex

The artform of smoking marijuana.
To smoke weed.
To hit green and such.

Originated in Union County NJ by the Strength Team. MUSCLE UP!!!!

Let's Flex some Green.
Wanna Flex?

by Slick Rick the Ruler December 22, 2004

flex

to snog or get off with some one.

"no they aint goin out he's just using her for flex"

by restar October 03, 2008

Flex

South Florida term for a party or get together.

Have you heard about the flex tonight?

by KLCB May 17, 2019