The area between the base of the scrotum and the anus. (informal) taint. Coined as a play on the compound word underarm.
That girl has the face of Mama Cass, the body of Mama Cass, and the hair of my underballs. I'll pass.
by Throbbing Monster February 10, 2009
Get the underballsmug. by underballs hole June 23, 2021
Get the underball holemug.