roballsack 

A man of African decent, named Robel with a particularly large ball sack.

You are such a Roballsack.

roballsack by Tonesack October 12, 2017

Rallsack 

The same as a ballsack but much much bigger.

Girl 1: How was your date with Billy?
Girl 2: Great, He was amazing in bed and He had a giant Cock and Rallsack.

Rallsack by mmm pussy December 6, 2006