cunt bumping 

The act of 2 women criss crossing there legs and riding back and forth, or scissoring.

I walked in on the 2 whores cunt bumping.

cunt bumping by Claudeguy March 31, 2017

cunt bumbing 

As two women endure in an excersie of bumbing their vaginas together in and aggressive manor sometimes breaking bones

Me and willow were cunt bumbing last night

cunt bumbing by Steveopoulus June 6, 2017