Definitions by mr.krinklebein

ballseam 

The wrinkly skin that separates the scrotum into the left and right hemispheres.

I was freeballing and my zipper caught my ballseam.

ballseam by mr.krinklebein May 14, 2010

kelvin 

The wrinkly skin that separates the scrotum into the left and right hemispheres. Also known as the ballseam.

I forgot to wear underwear and the zipper caught my kelvin.

kelvin by mr.krinklebein May 11, 2010