ABC connection 

A slight acronym for the commonly used phrase "ASS BALLS CONNECTION" or even more commonly known as the "grundle." It is hairy area between your balls and your ass hole.

Man you have a hairy ABC Connection...Biatch!

ABC connection by NIBUD April 3, 2003

abc connector 

Asshole to ball connector

My ABC connector is bothering me from walking so much

abc connector by Jason Crane September 9, 2019