cuntflex 

West London slang for a telephone.

Hey! Can I use your cuntflex, I need to call my nan.
No, I aint got no credit, you cuntflexus Maximus!

cuntflex by Dave979 July 5, 2006

cuntflex 

when a girl is onyour dick but not moving, just sitting there squeezing her pussy muscles on your dick

That girl was riding me so hard last night then just stopped and gave me a cuntflex.

cuntflex by luckykorn December 28, 2009

cuntflexin 

The act of being a straight fuckin cunt.

Bitch pullin rank.

She woke up that morning straight cuntflexin on me.

cuntflexin by Tia"thecunt"Polk November 5, 2019